Proservice Building Services Marketplace PlcLSE: PRO

Change of Name, Website and Ticker Code

17 November 2025

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HSS Hire Group plc

(to be renamed ProService Building Services Marketplace plc)

("HSS" the "Company" or the "Group")

Change of Name, Website and Ticker Code

Further to the Company's announcement this morning, the Company wishes to advise that its change of (i) name; (ii) website; and (iii) tradeable instrument display mnemonic on the London Stock Exchange, has been delayed due to administrative reasons. The Company will make a further announcement once these changes have taken effect.

For further information, please contact:

HSS Hire Group plc (to be renamed ProService Building Services Marketplace plc)

Email: hssproservice@fticonsulting.com

Richard Jones, Group Chief Financial Officer

FTI Consulting

Tel: 020 3727 1340

Nick Hasell

Victoria Hayns

Canaccord Genuity Limited (Nominated Adviser and Joint Broker)

Tel: 020 7523 8000

Andrew Potts

George Grainger

Singer Capital Markets (Joint Broker)

Tel: 020 7496 3000

Alex Bond / Rick Thompson (Investment Banking)

Rhys Williams (Equity Sales)