Many pubs will be unable to reopen outside and trade at a profit or lack a garden, costing the sector some £1.5bn, the BBPA said.
Restrictions such as the rule of six and table service are to continue until 21 June at the earliest, the Prime Minister outlined yesterday.
BBPA chief executive Emma McClarkin said it was imperative further support was issued for the sector at the 3 March Budget.
“The reality is debt is mounting and many pubs simply won’t be able to hold out to April or May and will close for good before any door gets open.
“The Prime Minister said he will not pull the rug out and do whatever it takes. We will hold both him and the Chancellor to this,” she said.