Issue of Equity

14 August 2023

TRITAX BIG BOX REIT PLC

(the "Company")

                                                    Issue of Equity

Tritax Big Box REIT plc, a UK leader in high-quality logistics real estate, today announces the issue of        34,911,333 new ordinary shares in the Company ("Ordinary Shares") at an issue price of £1.4200 per share, being the closing mid-market share price on Thursday, 10 August 2023 (being the date immediately prior to the allotment of the new Ordinary Shares).

The 34,911,333 new Ordinary Shares have been issued to certain members of the original Tritax Symmetry Holdings Limited ("TSHL") management team as part of the settlement of their incentive arrangements agreed at the time of the acquisition of TSHL in February 2019.

Details of these arrangements were set out in the Company's announcement of its half year results to 30 June 2023, released on 3 August 2023.

Admission

Applications have been made for the 34,911,333 new Ordinary Shares to be admitted to the premium segment of the Official List and to trading on the main market of the London Stock Exchange. It is expected that dealings in the new Ordinary Shares will commence at 8.00 a.m. on Thursday, 17 August 2023 ("Admission").

Total Voting Rights

Immediately following Admission, the Company's issued share capital will consist of 1,903,738,325 Ordinary Shares with voting rights. 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 interests in, or change to their interest in, the share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

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