The information contained in this report is unaudited and does not comprise statutory accounts within the meaning of section 434 of the Companies Act 2006 ('the Act'). The statutory accounts for the year ended 31 December 2022 have been filed with the Registrar of Companies. The report of the auditor on those statutory accounts was unqualified, did not draw attention to any matters by way of emphasis and did not contain a statement under section 498(2) or (3) of the Act.

This report provides a summary of the unaudited business and financial trends for the nine months ended 30 September 2023 for Santander UK Group Holdings plc and its subsidiaries (Santander UK), including its principal subsidiary Santander UK plc. The unaudited business and financial trends in this statement only pertain to Santander UK on a statutory basis (the statutory perimeter). Unless otherwise stated, references to results in previous periods and other general statements regarding past performance refer to the business results for the same period in 2022.

This report contains non-IFRS financial measures that are reviewed by management in order to measure our overall performance. These are financial measures which management believe provide useful information to investors regarding our results and are outlined as Alternative Performance Measures in Appendix 1. These measures are not a substitute for IFRS measures. A list of abbreviations is included at the end of this report and a glossary of terms is available at:
https://www.santander.co.uk/about-santander/investor-relations/glossary

Santander UK Group Holdings plc

Quarterly Management Statement
for the nine months ended 30 September 2023

Mike Regnier, Chief Executive Officer, commented:

"We have delivered a good set of results in spite of a challenging macroeconomic environment. We have prioritised our customers' needs, offering the right products and services as well as support with their finances when they need it. We provided competitive rates for savers, including a top-of-market easy access savings account, and helped homeowners struggling with rising rates, through the Government's Mortgage Charter.

This quarter we opened our new head office in Milton Keynes, offering sustainable office spaces and exciting opportunities for both staff and the wider community. We have continued our branch network investment and modernisation programme, encouraging people to visit and make the most of the facilities we provide. We also opened two new Work Cafés, providing a modern environment to access banking services, co-working space and free meeting rooms.

Our clear strategy and prudent approach to risk - alongside the positive benefits of Banco Santander's new operating model - will enable us to continue to support customers through the economic challenges ahead."

9M-23 financial and business highlights

We continued to help and support our customers facing the pressures of the current economic environment

Good set of results with profit before tax of £1,731m (9M-22: £1,489m)

Customer loans and deposits reduced following market trends and our disciplined pricing actions

Our strategy delivers strong liquidity, funding and capital with prudent approach to risk

Looking ahead

Profit before tax up 16%

Adjusted profit before tax up 13%²

Prudent approach to risk evident across product portfolios

9M-23 ECL provision increased by £57m to £1,064m (Dec-22: £1,007m)

Credit performance resilient with small increase in Stage 3 ratio

Updated economic scenarios

Treasury

Highly liquid balance sheet

Strong and diversified funding across well-established issuance programmes

Capital ratios well above regulatory requirements

Structural hedge evolution

Appendix 1 - Alternative Performance Measures

In addition to the financial information prepared under IFRS, this Quarterly Management Statement contains non-IFRS financial measures that constitute APMs, as defined in ESMA guidelines. The financial measures contained in this report that qualify as APMs have been calculated using the financial information of the Santander UK group but are not defined or detailed in the applicable financial information framework or under IFRS. We use these APMs when planning, monitoring, and evaluating our performance. We consider these APMs to be useful metrics for management and investors to facilitate operating performance comparisons from period to period. Whilst we believe that these APMs are useful in evaluating our business, this information should be considered as supplemental in nature and is not meant as a substitute for IFRS measures.

a)     Adjusted profit metrics

As shown in the table below, profit before tax is adjusted for items management believe to be significant. We adjust for these to facilitate operating performance comparisons from period to period.

Prior period adjustment: In Q1-23 we removed the operating lease depreciation adjustment to non-interest income and operating expenses to align to Banco Santander's presentation. Prior periods were restated, there was no impact on adjusted profit. In 9M-22 adjusted non-interest income and adjusted operating expenses increased by £60m and the adjusted CIR increased by 1pp to 44%.

Net loss / (gain) on sale of property: previously named 'net gain on sale of London head office and branch properties', now also includes subsequent sale of property under our transformation programme.

Transformation costs and charges: relate to a multi-year project to deliver on our strategic priorities and enhance efficiency in order for us to better serve our customers and meet our medium-term targets.

Adjusted CIR

Calculated as adjusted total operating expenses before credit impairment (charges) / write-backs, provisions and charges as a percentage of the total of net interest income and adjusted non-interest income. We consider this metric useful for management and investors as an efficiency measure to capture the amount spent to generate income, as we invest in our multi-year transformation programme.

b)    Adjusted RoTE

Calculated as adjusted profit after tax attributable to equity holders of the parent, divided by average shareholders' equity less non-controlling interests, other equity instruments and average goodwill and other intangible assets. We consider this adjusted measure useful for management and investors as a measure of income generation on shareholder investment, as we focus on improving returns through our multi-year transformation programme.

Adjustment for transformation

Details of these items are outlined in section a) of Appendix 1, with a total impact on profit before tax of £122m. The impact of these items on the taxation charge was £34m and on profit after tax was £88m. Tax is calculated at the standard rate of corporation tax including the bank surcharge, except for items such as conduct provisions which are not tax deductible.

Equity adjustments

These adjustments are made to reflect the impact of adjustments to profit on average tangible equity.

c)     Other non-IFRS measures and their calculations

Interest rate risk

List of abbreviations

Retail NPS: Our customer experience research was subject to independent third party review. We measured the main banking NPS of 17,095 consumers on a six month basis using a 11-point scale (%Top 2 - %Bottom 7). The reported data is based on the six months ending 30 September 2023, and the competitor set included in the ranking analysis is Barclays, Halifax, HSBC, Lloyds Bank, Nationwide, NatWest Group (Natwest & RBS) and TSB.

September 2023: NPS ranked 5^th for Retail, we note a margin of error which impacts those from 3^rd to 5^th and makes their rank statistically equivalent.

December 2022: NPS ranked 6^th for Retail, we note a margin of error which impacts those from 4^th to 6^th and makes their rank statistically

equivalent.

Business & Corporate NPS: Business and corporate NPS is measured by the MarketVue Business Banking from Savanta. This is an ongoing telephone based survey designed to monitor usage and attitude of UK businesses towards banks. 14,500 structured telephone interviews are conducted each year among businesses of all sizes from new start-ups to large corporates. The data is based upon 8,522 interviews made in twelve months ended 18 September 2023 with businesses turning over from £0 - £500m per annum and are weighted by region and turnover to be representative of businesses in Great Britain. NPS -recommendation score is based on an 11-point scale (%Top 2 - %Bottom 7). The competitor set included in this analysis is Barclays, RBS, HSBC, Lloyds Bank and NatWest.

September 2023: NPS ranked 1^st for Business & Corporate.

December 2022: NPS ranked 1^st for Business & Corporate.

Additional information about Santander UK and Banco Santander

Santander UK is a financial services provider in the UK that offers a wide range of personal and commercial financial products and services. At 30 September 2023, the bank had around 19,800 employees and serves around 14 million active customers, 7 million digital customers via a nationwide 444 branch network, telephone, mobile and online banking. Santander UK is subject to the full supervision of the FCA and the PRA in the UK. Santander UK plc customers' eligible deposits are protected by the FSCS in the UK.

Banco Santander (SAN SM, STD US, BNC LN) is a leading retail and commercial bank, founded in 1857 and headquartered in Spain and is one of the largest banks in the world by market capitalization. Its primary segments are Europe, North America, South America and Digital Consumer Bank, backed by its secondary segments: Santander Corporate & Investment Banking (Santander CIB), Wealth Management & Insurance (WM&I) and PagoNxt. Its purpose is to help people and businesses prosper in a simple, personal and fair way. Banco Santander is building a more responsible bank and has made a number of commitments to support this objective, including raising over €120 billion in green financing between 2019 and 2025, as well as financially empowering more than 10 million people over the same period.

At 30 June 2023, Banco Santander had more than 1.2 trillion euros in total funds, 164 million customers, of which 28 million are loyal and 53 million are digital, 9,000 branches and over 212,000 employees.

Banco Santander has a standard listing of its ordinary shares on the London Stock Exchange and Santander UK plc has preference shares listed on the London Stock Exchange.

None of the websites referred to in this Quarterly Management Statement, including where a link is provided, nor any of the information contained on such websites is incorporated by reference in this Quarterly Management Statement.

Disclaimer

Santander UK Group Holdings plc (Santander UK) and Banco Santander caution that this announcement may contain forward-looking statements. Such forward-looking statements are found in various places throughout this announcement. Words such as "believes", "anticipates", "expects", "intends", "aims" and "plans" and other similar expressions are intended to identify forward-looking statements, but they are not the exclusive means of identifying such statements. Forward-looking statements include, without limitation, statements concerning our future business development and economic performance. These forward-looking statements are based on management's current expectations, estimates and projections and Santander UK, Santander UK plc and Banco Santander caution that these statements are not guarantees of future performance. We also caution readers that a number of important factors could cause actual results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements. We have identified certain of these factors in the forward-looking statements on page 271 of the Santander UK Group Holdings plc 2022 Annual Report. Investors and others should carefully consider the foregoing factors and other uncertainties and events. Undue reliance should not be placed on forward-looking statements when making decisions with respect to Santander UK, Santander UK plc, Banco Santander and/or their securities. Such forward-looking statements speak only as of the date on which they are made, and we do not undertake any obligation to update or revise any of them, whether as a result of new information, future events or otherwise. Statements as to historical performance, historical share price or financial accretion are not intended to mean that future performance, future share price or future earnings for any period will necessarily match or exceed those of any prior quarter.

Santander UK is a frequent issuer in the debt capital markets and regularly meets with investors via formal roadshows and other ad hoc meetings. In line with Santander UK's usual practice, over the coming quarter it expects to meet with investors globally to discuss this Quarterly Management Statement, the results contained herein and other matters relating to Santander UK.

Nothing in this announcement constitutes or should be construed as constituting a profit forecast.