Prime Minister Theresa May has accepted the BBC’s offer to take part in a debate on Brexit on Sunday 9 December, two days before MPs vote on her deal.
But Labour sources say the party has not yet agreed to take part, with Jeremy Corbyn telling This Morning he preferred ITV’s offer.
The BBC said it was “delighted” Mrs May had accepted the offer.
It added it would discuss debate formats with both parties and would announce further details soon.
Mr Corbyn claimed he preferred ITV’s bid out of “respect” for viewers who wanted to watch the I’m A Celebrity… Get Me Out Of Here! final on ITV the same evening – 9 December.
“I want to watch it myself,” he said.
When approached by the BBC, ITV confirmed the final of the show would air at 21:00 GMT.
It is understood the BBC debate programme would start at 20:00 in Birmingham, airing after Strictly Come Dancing and replacing David Attenborough’s Dynasties on BBC One.
BBC assistant political editor Norman Smith said Mrs May had accepted this offer “because there was a view on the government’s side that the BBC would address the crux of the issue, namely the deal”.
It is understood the BBC’s proposed debate format would include a range of parties and opinions. The SNP, Lib Dems, Plaid Cymru and Greens have demanded to be involved.
Green MP Caroline Lucas tweeted that the debate should include dialogue “about all possible routes forward” – including another referendum.
Lib Dem leader Sir Vince Cable – who has also campaigned for another referendum – said he was “raring and willing to go” in the TV debate, adding it would be a “travesty” if only Mrs May and Mr Corbyn were involved.
Plaid Cymru leader Adam Price said his party had been “sidelined throughout the Brexit process” and their omission from any debate would perpetuate that problem.
Ahead of the 2017 general election, Mrs May refused to take part in televised debates, with then home secretary Amber Rudd standing in for her on the BBC’s programme.
The prime minister is beginning a two-week campaign to sell her Brexit deal to the public and MPs, before the vote in the House of Commons on 11 December. BBC