18 June 2021

KIER GROUP PLC
("Kier" or the "Company")

Admission to trading and notice of trading update

Following Shareholder approval of the terms of the Capital Raise and the allotment of the New Shares at the General Meeting of Kier which was held on 16 June 2021, it is expected that the New Ordinary Shares in the Company will be admitted to the Official List maintained by the Financial Conduct Authority and will commence trading on the Main Market of the London Stock Exchange at 8.00 a.m. today.

The total issued share capital of Kier following Admission will be 446,165,699 Shares and the total number of voting rights of the Company will be 446,165,699 and this figure 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 in their interest in, the share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

The Company also announces that it will release a trading update for the full year to 30 June on Tuesday 13 July 2021.

For further information, please contact:

The person who arranged the release of this Announcement on behalf of Kier was Phil Higgins, Company Secretary.

The Kier Group plc Legal Entity Identifier is 2138002RKCU2OM4Y7O48.

Capitalised terms contained within this announcement and not otherwise defined have the same definitions as those contained in the Prospectus published on 13 May 2021, available on the Company website.

IMPORTANT NOTICES

N.M. Rothschild & Sons Limited ("Rothschild & Co"), Numis Securities Limited and Peel Hunt LLP, which are each authorised and regulated in the UK by the FCA, are each acting exclusively for the Company and no one else in connection with the contents of this Announcement, the Capital Raise and any other matters referred to in this Announcement and will not regard any other person as a client in relation to the Capital Raise or any other matters referred to in this Announcement and will not be responsible to anyone for providing the protections afforded to their clients nor for giving advice to any other person in relation to the contents of this Announcement, the Capital Raise or any other matter or arrangement referred to in this Announcement. Neither Rothschild & Co nor the Joint Bookrunners are responsible for the contents of this Announcement.

This Announcement has been 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 Rothschild & Co, either Joint Bookrunner or by any of their respective affiliates, directors, employees, advisers or agents as to, or in relation to, the accuracy or completeness of this Announcement or any other written or oral information made available to any interested party or its advisers, and any liability therefore is expressly disclaimed.

Neither this Announcement nor any copy of it nor the information contained in it and any related materials is for publication, distribution or release, in whole or in part, directly or indirectly, in or into or from the United States (including its territories and possessions, any State of the United States and the District of Columbia) (subject to certain restrictions), Australia, its territories and possessions, Canada, Japan, South Africa, or any other jurisdiction where to do so would constitute a violation of the relevant laws of such jurisdiction.

The distribution of this Announcement and the offering of the New Ordinary Shares may be restricted by law in certain jurisdictions.

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

Unless the context otherwise requires, all references to time are to London time.