04/09/2026
The ban on upward-only rent reviews received Royal Assent on 29 April 2026. It is not in force, and that distinction matters more than the headline.
Commencement needs regulations that have not been made, and a consultation on caps and collars is expected first. So a commercial lease signed this month can still carry an upward-only review, and it will bind for the whole term.
One date reaches backwards. Where a lease is granted under an option to renew, or an agreement for lease with a sitting tenant, entered into on or after 17 March 2026, the resulting lease is caught whatever its own date.
Landlords have a window. Tenants who want the protection must negotiate for it now.
https://www.trentlaw.co.uk/post/upward-only-rent-reviews-what-the-2026-act-really-changes-and-when