THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS RESTRICTED AND IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM THE UNITED STATES OF, AUSTRALIA, CANADA, JAPAN, SOUTH AFRICA OR ANY OTHER JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF THAT JURISDICTION. PLEASE SEE THE IMPORTANT NOTICE AT THE END OF THIS ANNOUNCEMENT.

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE MARKET ABUSE REGULATION (EU. NO. 596/2014) AS IT FORMS PART OF UK LAW BY VIRTUE OF THE EUROPEAN UNION (WITHDRAWAL) ACT 2018, AS AMENDED.

10 January 2024

Pennon Group plc ("Pennon", the "Group" or the "Company")

RESULTS OF EQUITY CAPITAL RAISE

Pennon ("Pennon", the "Group" or the "Company") is pleased to announce the successful completion of the equity capital raise of new ordinary shares of 61.05 pence each in the capital of the Company (the "New Ordinary Shares") announced earlier today (the "Equity Capital Raise"). The Equity Capital Raise in total comprises 24,657,535 New Ordinary Shares (representing approximately 9.4 per cent. of the Company's existing issued share capital) and will raise gross proceeds of approximately £180 million.

A total of 23,711,998 New Ordinary Shares have been conditionally placed by Barclays Bank PLC ("Barclays") and Morgan Stanley & Co. International plc ("Morgan Stanley") (together, the "Bookrunners") at a price of 730 pence per New Ordinary Share (the "Offer Price"), with existing and new institutional investors, raising gross proceeds of approximately £173 million (the "Placing").

Concurrently with the Placing, certain directors and executives of the Company have subscribed for an aggregate of 20,537 New Ordinary Shares at the Offer Price, pursuant to subscription letters entered into with the Company, raising gross proceeds of approximately £150,000 (the "Subscription"). In addition, retail investors have subscribed in the separate retail offer made by the Company via the PrimaryBid platform for a total of 925,000 New Ordinary Shares at the Offer Price, raising gross proceeds of approximately £7 million (the "Retail Offer").

The Offer Price represents a discount of approximately 2.6 per cent to the closing share price of 750 pence on 9 January 2024 and a discount of 4.9 per cent to the middle market price at the time at which the Company and the Bookrunners agreed the Offer Price.

Applications have been made to the Financial Conduct Authority (the "FCA") and the London Stock Exchange plc (the "LSE") respectively for the admission of the New Ordinary Shares to the premium listing segment of the Official List of the FCA and to trading on the main market for listed securities of the LSE (together, "Admission"). It is expected that Admission will take place on or before 8.00 a.m. on 12 January 2024 and that dealings in the New Ordinary Shares will commence at that time. The Equity Capital Raise is conditional upon, amongst other things, Admission becoming effective and the placing agreement entered into between the Company and the Bookrunners not having been terminated in accordance with its terms. The New Ordinary Shares will, when issued, be fully paid and free of all liens, charges and encumbrances and will rank pari passu in all respects with the existing ordinary shares of the Company, including the right to receive all dividends and other distributions declared, made or paid after the date of issue.

For the purposes of the Disclosure Guidance and Transparency Rules, the total issued share capital of the Company following Admission will consist of 286,018,720 ordinary shares. The Company holds 5,628 shares in treasury. Therefore, the total number of voting rights in the Company following Admission will be 286,013,092 which is the figure which may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the Disclosure Guidance and Transparency Rules.

Directors' participation in the Subscription

The following directors of the Company have agreed to subscribe for the following number of New Ordinary Shares at the Offer Price as part of the Subscription:

The person responsible for arranging the release of this announcement on behalf of the Company is Andrew Garard, Group General Counsel and Company Secretary

Pennon Group PLC LEI: 213800V1CCTS41GWH423

For further information, please contact:

Pennon Group PLC                                                                                                         

Steve Buck                        Group Chief Financial Officer                                                         +44 (0)1392 44 3168

Jennifer Cooke                 Group Head of Investor Relations

Media Enquiries

James Murgatroyd          FGS Global                                                                                             +44 (0)207 251 3801

Harry Worthington

Barclays Bank PLC

Joint Global Co-ordinator & Joint Bookrunner                                                                         +44 (0) 20 7623 2323

Alisdair Gayne, Iain Smedley, Richard Bassingthwaighte, Chris Madderson

Morgan Stanley & Co. International plc

Joint Global Co-ordinator & Joint Bookrunner                                                                         +44 (0) 20 7425 8000

Andrew Foster, Francesco Puletti, Emma Whitehouse

Pre-Emption Group Reporting

The Equity Capital Raise is a non-pre-emptive issue of equity securities for cash and accordingly the Company makes the following post transaction report in accordance with the most recently published Pre-Emption Group Statement of Principles (2022).

Note: (1) Gearing at the regulated water business level, defined as net debt / RCV

IMPORTANT NOTICES

This Announcement is for information purposes only, is not intended to and does not constitute or form part of any offer or invitation to purchase or subscribe for, underwrite, sell or issue or the solicitation of an offer to purchase or subscribe, sell, acquire, dispose of the New Ordinary Shares or any other security in the United States (including its territories and possessions, any state of the United States and the District of Columbia, collectively the "United States"), Australia, Canada, Japan, or the Republic of South Africa ("South Africa") or in any jurisdiction in which, or to any persons to whom, such offering, solicitation or sale would be unlawful.

No offering document or prospectus will be made available in connection with the matters contained in this Announcement and no such prospectus is required to be published in accordance with Prospectus Regulation (EU) 2017/1129 (the "EU Prospectus Regulation") or the EU Prospectus Regulation as it forms part of English law pursuant to the European Union (Withdrawal) Act 2018 (as amended) (the "UK Prospectus Regulation").

The New Ordinary Shares have not been and will not be registered under the United States Securities Act of 1933, as amended (the "Securities Act"), or under the securities laws of any state or other jurisdiction of the United States, and may not be offered, sold, resold, transferred or delivered, directly or indirectly, in or into the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and in accordance with any applicable securities laws of any state or other jurisdiction of the United States. There will be no public offering of the New Ordinary Shares in the United States, the United Kingdom or elsewhere.

The New Ordinary Shares have not been approved or disapproved by the United States Securities and Exchange Commission, any state securities commission or any other regulatory authority in the United States, nor have any of the foregoing authorities passed upon or endorsed the merits of the Placing or the accuracy or adequacy of this Announcement. Any representation to the contrary is a criminal offence in the United States.

A prospectus qualifying the New Ordinary Shares for distribution has not been, and will not be, filed with any securities commission or similar regulatory authority of any jurisdiction of Canada. No such authority has reviewed, expressed an opinion about or in any way passed upon the Placing or the New Ordinary Shares, and it is an offence to claim otherwise. Any offering of the Placing Shares in Canada will be made on a private placement basis only in the provinces of British Columbia, Alberta, Ontario and Quebec, in reliance on exemptions from the requirements under applicable Canadian securities laws that the Company file and obtain a receipt for a prospectus for any distribution of securities. No offer of securities was made in Canada except to a person who has represented to the Company and each of the Bookrunners that such person (i) is purchasing as principal for its own account, or is deemed under applicable Canadian securities laws to be purchasing as principal, for investment only and not with a view to resale or distribution; (ii) is both an "accredited investor" as defined in section 1.1 of National Instrument 45-106 - Prospectus Exemptions of the Canadian Securities Administrators (or, in Ontario, as defined in section 73.3(1) of the Securities Act (Ontario), as applicable) and also a "permitted client" as defined in section 1.1 of National Instrument 31-103 - Registration Requirements, Exemptions and Ongoing Registrant Obligations of the Canadian Securities Administrators; and (iii) was not created, and is not used, solely to purchase or hold securities as an accredited investor. Any resale of Placing Shares into Canada or acquired by a Canadian investor in the Placing must be made in accordance with applicable Canadian securities laws, which may vary depending on the relevant jurisdiction (both of the investor and the person to whom the Placing Shares are being resold), and may require that resales be made in accordance with Canadian prospectus requirements or pursuant to an available exemption therefrom. These resale restrictions may under certain circumstances apply to resales of Placing Shares outside of Canada.

This Announcement does not constitute, or purport to include the information required of, a disclosure document under Chapter 6D of the Australian Corporations Act 2001 (the "Corporations Act") or a product disclosure statement under Chapter 7 of the Corporations Act and will not be lodged with the Australian Securities and Investments Commission. No offer of securities is made pursuant to this Announcement in Australia except to a person who is (i) either a "sophisticated investor" within the meaning of section 708(8) of the Corporations Act or a "professional investor" within the meaning of section 9 and section 708(11) of the Corporations Act; and (ii) a "wholesale client" for the purposes of section 761G(7) of the Corporations Act (and related regulations) who has complied with all relevant requirements in this respect. No Placing Shares may be offered for sale (or transferred, assigned or otherwise alienated) to investors in Australia for at least 12 months after their issue, except in circumstances where disclosure to investors is not required under Part 6D.2 of the Corporations Act.

In Switzerland, the Placing Shares may be sold only to purchasers purchasing, or deemed to be purchasing, as principal and who are "professional clients" within the meaning of the Swiss Financial Services Act ("FinSA"). This Announcement does not constitute a prospectus pursuant to FinSA, and no such prospectus has been or will be prepared for or in connection with the offering of the Placing Shares. The Placing Shares will not be admitted to trading on any trading venue (exchange or multilateral trading facility) in Switzerland.

This Announcement and the placing of the Placing Shares does not constitute, advertise or relate to an offer to the public (as defined in the South African Companies Act, No 71 of 2008, as amended (the "SA Companies Act")) for the sale of or subscription for, or the solicitation of an offer to buy or subscribe for, securities or an opportunity to invest in a collective investment scheme in South Africa (as contemplated in the South African Collective Investment Scheme Control Act, No 45 of 2002). In South Africa, the Placing Shares were only offered to financial institutions and other persons who are referred to in section 96(1)(a) of the SA Companies Act, or persons who subscribe, as principal, for the Placing Shares at a total acquisition cost of ZAR1 000 000 or more, as contemplated in section 96(1)(b) of the SA Companies Act ("SA Qualifying Investor"). Any person who is not a SA Qualifying Investor was not entitled to acquire any securities offered for sale or subscription as described in this Announcement or otherwise act thereon. This Announcement does not, nor is it intended to, constitute a prospectus registered under the SA Companies Act and accordingly, does not comply with the substance and form requirements for prospectuses set out in the SA Companies Act and the South African Companies Regulations of 2011. No prospectus has been lodged with, or registered by, the South African Companies and Intellectual Property Commission. Nothing in this Announcement should be viewed, or construed, as "advice" as that term is used in the South African Financial Markets Act, No 19 of 2012, as amended ("FMA") or "advice" and/or an "intermediary service" as those terms are used in the South African Financial Advisory and Intermediary Services Act, No 37 of 2002, as amended (the "SA FAIS Act") and nothing in this Announcement should be construed as constituting the canvassing for, or marketing or advertising of, financial services in South Africa. It is the responsibility of any SA Qualifying Investor to ensure they or it have obtained all required approvals in terms of the financial surveillance or "exchange control" regulations promulgated under the South African Currency and Exchanges Act, 1933, and any rulings issued pursuant thereto.

This Announcement and the offering of the Placing Shares has not been approved or licensed by the United Arab Emirates ("UAE") Central Bank, the SCA, the Dubai Financial Services Authority, or any other relevant licensing authorities or governmental agencies in the UAE (the "UAE Authorities") and accordingly does not constitute a public offering of the Placing Shares in the UAE in accordance with the Federal Law No. 32 of 2021 Concerning Commercial Companies (as amended), the UAE Securities and Commodities Authority's ("SCA") Board of Directors Resolulution Number 13 B.C of 2021 on the Reuglations Manual of the Financial Activities and Status Regularisation Mechanics (as amended) (the "SCA Rulebook") or otherwise. Any offering to be made in the UAE is to be made only to certain persons who are Professional Investors as defined in the SCA Rulebook and have confirmed the same. This Announcement and the information referred to herein must therefore not be delivered to, or relied on by, any other person in the UAE. The UAE Authorities assume no liability for any investment that the original recipient makes as a professional investor.

This Announcement and the offering of the Placing Shares relates to an Exempt Offer in accordance with the Financial Services Regulatory Authority's ("the "FSRA") Financial Services and Markets Regulations and the FSRA's Market Rules. It does not constitute a public offering of the Placing Shares in the Abu Dhabi Global Market (the "ADGM"). This Announcement is intended for distribution only to persons who meet the Professional Client criteria set out in Rule 2.4 of the FSRA's Conduct of Business Rulebook (COBS). It must not be delivered to, or relied on by, any other person in the ADGM. The FSRA has no responsibility for reviewing or verifying any documents in connection with an Exempt Offer. The FSRA has not approved this Announcement or taken steps to verify the information set out in it and has no responsibility for it. The Placing Shares may be illiquid and/or subject to restrictions on their resale. Prospective purchasers of the Placing Shares should conduct their own due diligence on the Placing Shares. If you do not understand the contents of this Announcement, you should consult an authorised financial adviser. No prospectus has been lodged or filed with, or registered by, the Australian Securities and Investments Commission, any securities commission or similar regulatory authority of any Canadian jurisdiction, the Japanese Ministry of Finance or the South African Companies and Intellectual Property Commission; and the Placing Shares have not been, and nor will they be, registered or qualified for public distribution under the securities laws of any state, province or territory of Australia, Canada, Japan or South Africa. Accordingly, the Placing Shares may not (unless an exemption under the relevant securities laws is applicable) be offered, sold, resold or delivered, directly or indirectly, in or into, Australia, Canada, Japan or South Africa or any other jurisdiction outside the United Kingdom or to, or for the account or benefit of any national, resident or citizen of Australia, Canada, Japan or South Africa.

The distribution of this Announcement and the Equity Capital Raise and/or the offer or sale of the New Ordinary Shares in certain jurisdictions may be restricted by law. No action has been taken which would permit an offer of the New Ordinary Shares or possession or distribution of this Announcement or any other offering or publicity material relating to such New Ordinary Shares in any jurisdiction where action for that purpose is required. Persons distributing any part of this Announcement must satisfy themselves that it is lawful to do so. Persons (including, without limitation, nominees and trustees) who have a contractual or other legal obligation to forward a copy of this Announcement should seek appropriate advice before taking any such action. Persons into whose possession this Announcement comes are required to inform themselves about, and to observe, any such restrictions. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.

This Announcement is directed only at: (a) persons in the United Kingdom who are "qualified investors" (within the meaning of the UK Prospectus Regulation) and (i) who have professional experience in matters relating to investments who fall within the definition of "investment professionals" in Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the "Order") or (ii) who are high net worth entities or other persons falling within Article 49(2)(a) to (d) of the Order; (b) persons in a member state of the European Economic Area who are "qualified investors" (within the meaning of the EU Prospectus Regulation); (c) in the United States, persons who are qualified institutional buyers (as defined in Rule 144A under the Securities Act); (d) in Canada, persons who are both "accredited investors" within the meaning of National Instrument 45-106 (or, in Ontario, section 73.3(1) of the Securities Act (Ontario), as applicable) and "permitted clients" within the meaning of National Instrument 31-103; (e) in Australia, persons who are (i) either "sophisticated investors" within the meaning of section 9 and section 708(8) of the Corporations Act or "professional investors" within the meaning of section 9 and section 708(11) of the Corporations Act and (ii) a "wholesale client" for the purposes of section 761(g)7 of the Corporations Act (and related regulations) who has complied with all relevant requirements in this respect; (f) in South Africa, persons who fall within the exemptions set out in sections 96(1)(A) or 96(1)(B) of the South African Companies Act No 71 of 2008; (g) in the UAE, persons who are professional investors as defined in the SCA Rulebook; (h) in the ADGM, persons who meet the professional client criteria set out in Rule 2.4 of the Conduct of Business Rulebook (COBS) of the FSRA of the ADGM; (i) in Switzerland, persons who are purchasing, or are deemed to be purchasing, as principal and who are "professional clients" within the meaning of FinSA and (j) those persons to whom it may otherwise be lawfully communicated (all such persons referred to above being "Relevant Persons"). Any investment or investment activity to which this Announcement relates is available only to Relevant Persons and will be engaged in only with Relevant Persons. Any investment in connection with the Placing will only be available to, and will only be engaged with, Relevant Persons. Any person who is not a Relevant Person should not act or rely on this Announcement or any of its contents.

Each of Barclays and Morgan Stanley is authorised in the United Kingdom by the Prudential Regulation Authority (the "PRA") and regulated in the United Kingdom by the PRA and the Financial Conduct Authority (the "FCA"). Each of Barclays and Morgan Stanley is acting exclusively for the Company and no-one else in connection with the Placing and will not regard any other person (whether or not a recipient of this Announcement) as its client in relation to the Placing or any other matter referred to in this Announcement, and will not be responsible to anyone other than the Company for providing the protections afforded to clients of Barclays or its affiliates or of Morgan Stanley or its affiliates, or for providing advice in relation to the Placing or any other matter referred to in this Announcement. None of the Bookrunners or any of their respective affiliates is acting for the Company with respect to the Retail Offer or the Subscription.

This Announcement is being issued by, and is the sole responsibility of, the Company. No representation or warranty, express or implied, is or will be made as to, or in relation to, and no responsibility or liability is or will be accepted by either of the Bookrunners or any of their respective affiliates or agents (or any of their respective directors, officers, employees or advisers) for the contents of the information contained in this Announcement, or any other written or oral information made available to or publicly available to any interested party or its advisers, or any other statement made or purported to be made by or on behalf of either of the Bookrunners or any of their respective affiliates in connection with the Company, the New Ordinary Shares or the Equity Capital Raise and any responsibility and liability whether arising in tort, contract or otherwise therefore is expressly disclaimed. No representation or warranty, express or implied, is made by either of the Bookrunners or any of their respective affiliates as to the accuracy, fairness, verification, completeness or sufficiency of the information contained in this Announcement and nothing in this Announcement is, or shall be relied upon as, a promise or representation in this respect, whether as to the past or future.

This Announcement does not identify or suggest, or purport to identify or suggest, the risks (direct or indirect) that may be associated with an investment in the New Ordinary Shares. Any indication in this Announcement of the price at which the Company's shares have been bought or sold in the past cannot be relied upon as a guide to future performance. No statement in this Announcement is or is intended to be a profit forecast or profit estimate or to imply that the earnings of the Company for the current or future financial years will necessarily match or exceed the historical or published earnings of the Company. The price and value of securities can go down as well as up.

The New Ordinary Shares to be issued pursuant to the Equity Capital Raise will not be admitted to trading on any stock exchange other than the London Stock Exchange.

Neither the content of the Company's website (or any other website) nor any website accessible by hyperlinks on the Company's website (or any other website) is incorporated in, or forms part of, this Announcement.

This Announcement does not constitute a recommendation concerning any investor's options with respect to the Equity Capital Raise. Investors and prospective investors should conduct their own investigation, analysis and evaluation of the business and data described in this Announcement. The contents of this Announcement are not to be construed as legal, business, financial or tax advice. Each investor or prospective investor should consult his, her or its own legal adviser, business adviser, financial adviser or tax adviser for legal, financial, business or tax advice.

UK Product Governance Requirements

Solely for the purposes of the product governance requirements of Chapter 3 of the FCA Handbook Product Intervention and Product Governance Sourcebook (the "UK Product Governance Requirements"), and disclaiming all and any liability, whether arising in tort, contract or otherwise, which any 'manufacturer' (for the purposes of the UK Product Governance Requirements) may otherwise have with respect thereto, the Placing Shares have been subject to a product approval process, which has determined that the Placing Shares are: (i) compatible with an end target market of retail investors and investors who meet the criteria of professional clients and eligible counterparties, each defined in Chapter 3 of the FCA Handbook Conduct of Business Sourcebook; and (ii) eligible for distribution through all permitted distribution channels (the "UK Target Market Assessment"). Notwithstanding the UK Target Market Assessment, distributors should note that: the price of the Placing Shares may decline and investors could lose all or part of their investment; the Placing Shares offer no guaranteed income and no capital protection; and an investment in the Placing Shares is compatible only with investors who do not need a guaranteed income or capital protection, who (either alone or in conjunction with an appropriate financial or other adviser) are capable of evaluating the merits and risks of such an investment and who have sufficient resources to be able to bear any losses that may result therefrom. The UK Target Market Assessment is without prejudice to any contractual, legal or regulatory selling restrictions in relation to the Placing. Furthermore, it is noted that, notwithstanding the UK Target Market Assessment, the Bookrunners will only procure investors who meet the criteria of professional clients and eligible counterparties.

For the avoidance of doubt, the UK Target Market Assessment does not constitute: (a) an assessment of suitability or appropriateness for the purposes of Chapters 9A or 10A respectively of the FCA Handbook Conduct of Business Sourcebook; or (b) a recommendation to any investor or group of investors to invest in, or purchase, or take any other action whatsoever with respect to the Placing Shares. Each distributor is responsible for undertaking its own target market assessment in respect of the Placing Shares and determining appropriate distribution channels