NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, INTO OR IN THE UNITED STATES, CANADA, AUSTRALIA, SOUTH AFRICA OR JAPAN OR ANY OTHER JURISDICTION IN WHICH OFFERS OR SALES WOULD BE PROHIBITED BY APPLICABLE LAW. THIS ANNOUNCEMENT DOES NOT CONSTITUTE OR FORM AN OFFER FOR SALE OF, OR THE SOLICITATION OF AN OFFER TO BUY, THE SECURITIES REFERRED TO HEREIN IN ANY JURISDICTION, INCLUDING THE UNITED STATES, CANADA, AUSTRALIA, SOUTH AFRICA, JAPAN OR ANY OTHER JURISDICTION IN WHICH OFFERS OR SALES WOULD BE PROHIBITED BY APPLICABLE LAW.

PLEASE SEE THE IMPORTANT NOTICE AT THE END OF THIS ANNOUNCEMENT.

PROPOSED PLACING OF APPROXIMATELY 10.5 MILLION VOTING ORDINARY SHARES IN LONDON STOCK EXCHANGE GROUP PLC ("LSEG" OR THE "COMPANY")

18 March 2021

Thomson Reuters and certain members of Refinitiv management announce their intention to indirectly sell approximately 10.5 million voting ordinary shares of 6⁷⁹/₈₆ pence each (the "Placing Shares") (in aggregate) in the capital of the Company through a placing to institutional investors (the "Placing"). The Placing Shares represent approximately 1.9% economic interest and 2.1% voting interest in the Company. LSEG will not receive any proceeds from the sale.

The Placing Shares will be sold by York Holdings II Limited ("Holdings II") and York Holdings III Limited ("Holdings III" and together with Holdings II, the "Sellers"), entities owned indirectly by BCP York Holdings (Delaware) L.P. (an entity owned by a consortium of certain investment funds affiliated with The Blackstone Group Inc. and including an affiliate of Canada Pension Plan Investment Board, an affiliate of GIC Special Investments Pte. Ltd. and certain other co-investors), Thomson Reuters and members of Refinitiv management. The Placing Shares being sold by the Sellers are on behalf of Thomson Reuters and certain members of Refinitiv management only.

The Sellers currently own in aggregate an approximate 32% economic interest and 24% voting interest in the Company. The Placing is being undertaken in compliance with the lock-up provisions contained in the Relationship Agreement (as defined in the Prospectus (see below)), a summary of the terms of which is set out in the prospectus published by LSEG on 9 December 2020 (the "Prospectus") and in accordance with an announcement by LSEG on 29 January 2021. As permitted under an exception to the lock-up provisions, Thomson Reuters plans to sell approximately US$1 billion of its shares of the Company in connection with tax that became payable upon completion of the sale of Refinitiv to the Company ("Completion"). Certain members of Refinitiv management are permitted to sell a portion of shares in the Company allocable to them to satisfy a tax liability that arose at Completion on part of the value of their management incentive plan interests.

The price per Placing Share will be determined by way of an accelerated bookbuilding process to institutional investors. The bookbuilding period will commence immediately following this announcement, and may close at any time on short notice. J.P. Morgan Securities plc ("J.P. Morgan") and Morgan Stanley & Co. International plc ("Morgan Stanley" and, together with J.P. Morgan, the "Joint Global Coordinators") are acting as joint global coordinators and joint bookrunners in connection with the Placing. Barclays Bank PLC ("Barclays"), Merrill Lynch International ("BofA Securities") and Goldman Sachs International ("Goldman Sachs" and, together with the Joint Global Coordinators, the "Joint Bookrunners") are acting as joint bookrunners in connection with the Placing.

The Placing Shares rank pari passu in all respects with the Company's voting ordinary shares.

The final number of Placing Shares to be placed will be agreed by the Joint Global Coordinators and the Sellers at the close of the bookbuilding process, and the results of the Placing will be announced as soon as practicable thereafter.

Enquiries

J.P. Morgan Securities plc     +44 (0) 20 7742 4000

Barry Meyers              

Eric Menell

Luke Butterworth

Morgan Stanley                      +44 (0) 207 425 8000

Harlan Wakoff

Angus Millar

James Manson-Bahr

IMPORTANT NOTICE

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS FOR INFORMATION PURPOSES ONLY AND DOES NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY OF THESE SECURITIES IN THE UNITED STATES, CANADA, AUSTRALIA, SOUTH AFRICA, JAPAN OR ANY OTHER JURISDICTION IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH JURISDICTION. THE SECURITIES MAY NOT BE OFFERED OR SOLD IN THE UNITED STATES ABSENT REGISTRATION OR AN APPLICABLE EXEMPTION FROM UNITED STATES REGISTRATION REQUIREMENTS. NO PUBLIC OFFER OF SECURITIES IS TO BE MADE IN THE UNITED STATES AND NEITHER THIS ANNOUNCEMENT NOR ANY COPY OF IT MAY BE TAKEN, TRANSMITTED OR DISTRIBUTED, 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), CANADA, SOUTH AFRICA OR JAPAN. ANY FAILURE TO COMPLY WITH THIS RESTRICTION MAY CONSTITUTE A VIOLATION OF UNITED STATES, CANADIAN, SOUTH AFRICAN OR JAPANESE SECURITIES LAWS.

THIS ANNOUNCEMENT AND ANY OFFER OF PLACING SHARES IF MADE SUBSEQUENTLY ARE ONLY ADDRESSED TO AND DIRECTED AT PERSONS (1) IN THE EEA WHO ARE QUALIFIED INVESTORS WITHIN THE MEANING OF REGULATION (EU) 2017/1129 (THE "PROSPECTUS REGULATION") AND (2) IN THE UNITED KINGDOM WHO ARE QUALIFIED INVESTORS WITHIN THE MEANING OF THE PROSPECTUS REGULATION AS IT FORMS PART OF DOMESTIC LAW BY VIRTUE OF THE EUROPEAN UNION (WITHDRAWAL) ACT 2018 WHO HAVE PROFESSIONAL EXPERIENCE IN MATTERS RELATING TO INVESTMENTS WHO FALL WITHIN ARTICLE 19(5) OF THE FINANCIAL SERVICES AND MARKETS ACT 2000 (FINANCIAL PROMOTION) ORDER 2005 (AS AMENDED, THE "ORDER") OR ARE HIGH NET WORTH ENTITIES FALLING WITHIN ARTICLE 49(2)(A) TO (D) OF THE ORDER OR ARE PERSONS TO WHOM AN OFFER OF THE PLACING SHARES MAY OTHERWISE BE LAWFULLY COMMUNICATED (ALL SUCH PERSONS BEING REFERRED TO AS "RELEVANT PERSONS"). PERSONS WHO ARE NOT RELEVANT PERSONS SHOULD NOT TAKE ANY ACTION ON THE BASIS OF THIS ANNOUNCEMENT AND SHOULD NOT ACT OR RELY ON IT.

THE SECURITIES REFERRED TO HEREIN WILL BE OFFERED WITHIN THE UNITED STATES ONLY TO QUALIFIED INSTITUTIONAL BUYERS IN RELIANCE ON RULE 144A UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND OUTSIDE THE UNITED STATES IN RELIANCE ON REGULATION S UNDER THE SECURITIES ACT, SUBJECT TO PREVAILING MARKET AND OTHER CONDITIONS. THERE IS NO ASSURANCE THAT THE PLACING WILL BE COMPLETED, OR IF COMPLETED, AS TO THE TERMS ON WHICH IT IS COMPLETED. THE SECURITIES REFERRED TO HEREIN HAVE NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES ACT AND MAY NOT BE OFFERED OR SOLD IN THE UNITED STATES WITHOUT REGISTRATION THEREUNDER OR UNLESS PURSUANT TO AN AVAILABLE EXEMPTION THEREFROM. NEITHER THIS DOCUMENT NOR THE INFORMATION CONTAINED HEREIN CONSTITUTES OR FORMS PART OF AN OFFER TO SELL, OR THE SOLICITATION OF AN OFFER TO BUY, SECURITIES IN THE UNITED STATES. THERE WILL BE NO PUBLIC OFFER OF ANY SECURITIES IN THE UNITED STATES OR ANY OTHER JURISDICTION. THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY SECURITIES, NOR SHALL IT CONSTITUTE AN OFFER, SOLICITATION OR SALE IN ANY JURISDICTION IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL.

THIS ANNOUNCEMENT DOES NOT, AND SHALL NOT, IN ANY CIRCUMSTANCES CONSTITUTE A PUBLIC OFFERING, NOR AN OFFER TO SELL OR TO SUBSCRIBE, NOR A SOLICITATION TO OFFER TO PURCHASE OR TO SUBSCRIBE SECURITIES IN ANY JURISDICTION. THE DISTRIBUTION OF THIS ANNOUNCEMENT AND THE OFFERING OR SALE OF THE SECURITIES IN CERTAIN JURISDICTIONS MAY BE RESTRICTED BY LAW. NO ACTION HAS BEEN TAKEN BY THE SELLERS, THE JOINT GLOBAL COORDINATORS, THE JOINT BOOKRUNNERS, OR ANY OF THEIR RESPECTIVE AFFILIATES THAT WOULD, OR WHICH IS INTENDED TO, PERMIT A PUBLIC OFFER OF THE SECURITIES IN ANY JURISDICTION OR POSSESSION OR DISTRIBUTION OF THIS ANNOUNCEMENT OR ANY OTHER OFFERING OR PUBLICITY MATERIAL RELATING TO THE SECURITIES IN ANY JURISDICTION WHERE ACTION FOR THAT PURPOSE IS REQUIRED. PERSONS INTO WHOSE POSSESSION THIS ANNOUNCEMENT COMES ARE REQUIRED BY THE SELLERS, THE JOINT GLOBAL COORDINATORS AND THE JOINT BOOKRUNNERS TO INFORM THEMSELVES ABOUT AND TO OBSERVE ANY APPLICABLE RESTRICTIONS.

NO PROSPECTUS OR OFFERING DOCUMENT HAS BEEN OR WILL BE PREPARED IN CONNECTION WITH THE PLACING. ANY INVESTMENT DECISION IN CONNECTION WITH THE PLACING MUST BE MADE SOLELY ON THE BASIS OF PUBLICLY AVAILABLE INFORMATION RELATING TO LONDON STOCK EXCHANGE GROUP PLC AND ITS SHARES. SUCH INFORMATION HAS NOT BEEN INDEPENDENTLY VERIFIED AND THE SELLERS, THE JOINT GLOBAL COORDINATORS AND THE JOINT BOOKRUNNERS ARE NOT RESPONSIBLE, AND EXPRESSLY DISCLAIM ANY LIABILITY, FOR SUCH INFORMATION. THE INFORMATION CONTAINED IN THIS ANNOUNCEMENT IS FOR BACKGROUND PURPOSES ONLY AND DOES NOT PURPORT TO BE FULL OR COMPLETE. NO RELIANCE MAY BE PLACED FOR ANY PURPOSE ON THE INFORMATION CONTAINED IN THIS ANNOUNCEMENT OR ON ITS ACCURACY OR COMPLETENESS.

THIS ANNOUNCEMENT DOES NOT CONSTITUTE A RECOMMENDATION CONCERNING THE PLACING. THE PRICE AND VALUE OF SECURITIES AND ANY INCOME FROM THEM CAN GO DOWN AS WELL AS UP. PAST PERFORMANCE IS NOT A GUIDE TO FUTURE PERFORMANCE. ACQUIRING PLACING SHARES TO WHICH THIS ANNOUNCEMENT RELATES MAY EXPOSE AN INVESTOR TO A SIGNIFICANT RISK OF LOSING ALL OF THE AMOUNT INVESTED. POTENTIAL INVESTORS SHOULD CONSULT A PROFESSIONAL ADVISOR AS TO THE SUITABILITY OF THE PLACING FOR THE ENTITY OR PERSON CONCERNED. THIS ANNOUNCEMENT DOES NOT REPRESENT THE ANNOUNCEMENT OF A DEFINITIVE AGREEMENT TO PROCEED WITH THE PLACING AND, ACCORDINGLY, THERE CAN BE NO CERTAINTY THAT THE PLACING WILL PROCEED. THE SELLERS RESERVE THE RIGHT NOT TO PROCEED WITH THE PLACING OR TO VARY THE TERMS OF THE PLACING IN ANY WAY.

CERTAIN FIGURES CONTAINED IN THIS ANNOUNCEMENT HAVE BEEN SUBJECT TO ROUNDING ADJUSTMENTS. ACCORDINGLY, IN CERTAIN INSTANCES, THE SUM OR PERCENTAGE CHANGE OF THE NUMBERS CONTAINED IN THIS ANNOUNCEMENT MAY NOT CONFORM EXACTLY WITH THE TOTAL FIGURE GIVEN.

EACH OF J.P. MORGAN, MORGAN STANLEY, BARCLAYS, BOFA SECURITIES AND GOLDMAN SACHS IS AUTHORISED BY THE PRUDENTIAL REGULATION AUTHORITY ("PRA") AND REGULATED BY THE FINANCIAL CONDUCT AUTHORITY ("FCA") AND THE PRA. THE JOINT GLOBAL COORDINATORS AND THE JOINT BOOKRUNNERS ARE ACTING FOR THE SELLERS ONLY IN CONNECTION WITH THE PLACING AND NO ONE ELSE, AND WILL NOT BE RESPONSIBLE TO ANYONE OTHER THAN THE SELLERS FOR PROVIDING THE PROTECTIONS OFFERED TO CLIENTS NOR FOR PROVIDING ADVICE IN RELATION TO THE PLACING SHARES OR THE PLACING, THE CONTENTS OF THIS ANNOUNCEMENT OR ANY TRANSACTION, ARRANGEMENT OR OTHER MATTER REFERRED TO IN THIS ANNOUNCEMENT.

THIS ANNOUNCEMENT INCLUDES STATEMENTS THAT ARE, OR MAY BE DEEMED TO BE, FORWARD-LOOKING STATEMENTS. THESE FORWARD-LOOKING STATEMENTS MAY BE IDENTIFIED BY THE USE OF FORWARD-LOOKING TERMINOLOGY, INCLUDING THE TERMS "INTENDS", "EXPECTS", "WILL", OR "MAY", OR, IN EACH CASE, THEIR NEGATIVE OR OTHER VARIATIONS OR COMPARABLE TERMINOLOGY, OR BY DISCUSSIONS OF STRATEGY, PLANS, OBJECTIVES, GOALS, FUTURE EVENTS OR INTENTIONS. THESE FORWARD-LOOKING STATEMENTS INCLUDE ALL MATTERS THAT ARE NOT HISTORICAL FACTS AND INCLUDE STATEMENTS REGARDING INTENTIONS, BELIEFS OR CURRENT EXPECTATIONS. NO ASSURANCES CAN BE GIVEN THAT THE FORWARD-LOOKING STATEMENTS IN THIS ANNOUNCEMENT WILL BE REALISED. AS A RESULT, NO UNDUE RELIANCE SHOULD BE PLACED ON THESE FORWARD-LOOKING STATEMENTS AS A PREDICTION OF ACTUAL EVENTS OR OTHERWISE.