SID Appointment and Board Committee changes

5 May 2021

TRITAX BIG BOX REIT PLC

(the "Company")

SENIOR independent DIRECTOR APPOINTMENT AND BOARD COMMITTEE CHANGES

The Board of the Company is pleased to announce the appointment of Alastair Hughes as Senior Independent Director with immediate effect. Mr Hughes has been a Non-Executive Director of the Company since February 2019 and is a member of the Nomination and Management Engagement Committees.

As previously announced, Aubrey Adams has been appointed as Chairman of the Company following Sir Richard Jewson's retirement at the conclusion of today's Annual General Meeting.

As a result, Mr Adams has also been appointed as Chair of the Nomination Committee and will step down as a member of the Audit & Risk Committee with immediate effect.

Effective immediately, the membership of each Board Committee is as follows:

The Terms of Reference for each Committee are available on the Company's website and on request from the Company Secretary.

In accordance with the Listing Rules, there is no further information required to be disclosed pursuant to LR9.6.11R.

FOR FURTHER INFORMATION, PLEASE CONTACT:

The Company's LEI is: 213800L6X88MIYPVR714

NOTES:

Tritax Big Box REIT plc (ticker: BBOX) is the only listed vehicle dedicated to investing in very large logistics warehouse assets (Big Boxes) in the UK and is committed to delivering attractive and sustainable returns for Shareholders. Investing in and actively managing existing built investments, land suitable for Big Box development and developments predominantly delivered through pre-let forward funded basis, the Company focuses on large, well-located, modern Big Box logistics assets, let to institutional-grade tenants on long-term leases (typically at least 12 years in length) with upward-only rent reviews and geographic and tenant diversification throughout the UK. The Company seeks to exploit the significant opportunity in this sub-sector of the UK logistics market owing to strong tenant demand and limited supply of Big Boxes.

The Company is a real estate investment trust to which Part 12 of the UK Corporation Tax Act 2010 applies (REIT), is listed on the premium segment of the Official List of the UK Financial Conduct Authority and is a constituent of the FTSE 250, FTSE EPRA/NAREIT and MSCI indices.

Further information on Tritax Big Box REIT is available at www.tritaxbigbox.co.uk