4 October 2021

TRITAX BIG BOX REIT PLC

(the "Company")

Director / PDMR SHAREHOLDINGS following issue

Further to the announcement on 30 September 2021 regarding the result of issue of new ordinary shares in the Company at an issue price of 204 pence per share (the "Issue Price") (the "Issue") and in accordance with article 19(3) of the UK version of the Market Abuse Regulation, the Company announces the following beneficial interests of certain Directors and their PCAs who have been issued ordinary shares in the Company ("Ordinary Shares") in connection with the Issue.

The Ordinary Shares issued pursuant to the Issue were admitted to the premium segment of the Official List and to trading on the main market of the London Stock Exchange on 4 October 2021.

The Company's issued share capital is 1,867,781,310 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 interest in, or a change to their interest in, the share capital of the Company under the FCA's Disclosure, Guidance and Transparency Rules.

   
The Ordinary Shares issued to Directors are listed in the table below.

^{1 4,172 shares have been acquired by Susan Laing (PCA of Richard Laing)}

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

Notification of a Transaction pursuant to Article 19(1) of Regulation (EU) No. 596/2014