NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH JURISDICTION

21 July 2026

HELICAL PLC

("Helical" or the "Company")

Return of Capital Update

Redemption of B Shares

Following its announcement on 22 May 2026 in relation to the proposed return of capital of approximately £12 million by the Company by way of a B Share Scheme, the Company confirms that the redemption of the B Shares issued pursuant to the B Share Scheme will occur today.

It is expected that the proceeds from the redemption of the B Shares will be dispatched to relevant Shareholders or CREST accounts credited (as appropriate) on Tuesday 4 August 2026.

In accordance with the FCA's Disclosure Guidance and Transparency Rule 5.6.1(A), the Company confirms that, following completion of the B Share Scheme and Share Consolidation, the Company's total issued share capital consists of 117,481,200 Ordinary Shares of 1.05 pence each of which the Company holds 985,873 New Ordinary Shares in treasury. Therefore, the total number of voting rights in the Company is 116,495,327.

Capitalised terms used in this announcement which are not otherwise defined have the same meaning as set out in the explanatory circular regarding the B Share Scheme and the Share Consolidation, and containing a notice of general meeting, published on 30 June 2026 (the "Circular").

A copy of the Circular is available at https://data.fca.org.uk/#/nsm/nationalstoragemechanism and on the

Company's website at www.helical.co.uk.

-ends-

IMPORTANT NOTICES

This announcement has been issued by and is the sole responsibility of Helical. The information contained in this announcement is for background purposes only and does not purport to be full or complete. The information in this announcement is subject to change.

This announcement is not intended to, and does not, constitute or form part of any offer, invitation or the solicitation of an offer to purchase, otherwise acquire, subscribe for, sell or otherwise dispose of, any securities pursuant to this announcement or otherwise.

This announcement has been prepared in accordance with and for the purpose of complying with English law and the Listing Rules and Disclosure Guidance and Transparency Rules of the Financial Conduct Authority. The information disclosed may not be the same as that which would have been disclosed if this announcement had been prepared in accordance with the laws of jurisdictions outside of England and Wales.

The release, publication or distribution of this announcement in, into or from jurisdictions other than the United Kingdom may be restricted by law. Any persons who are subject to the law of any jurisdiction other than the United Kingdom should inform themselves about and observe any such restrictions. Any failure to comply with the restrictions may constitute a violation of the securities law of any such jurisdiction.

If you are in any doubt about the contents of this announcement or the action you should take, you are recommended to seek your own financial advice immediately from your stockbroker, bank manager, fund manager, solicitor, accountant or other appropriate independent financial adviser duly authorised under the Financial Services and Markets Act 2000 if you are resident in the United Kingdom or, if not, from another appropriately authorised independent financial adviser.