Live: Theresa May takes part Labour MP David Lammy lays 2 days ago 39:17
Labour MP David Lammy lays Live: Theresa May takes part 2 days ago 10:09
He jokes that Jeremy Corbyn is "moving the goalposts" on the issue.
Mr Lammy says there is "no point continuing with votes of confidence" in Theresa May as it is unlikely to be successful.
He claims that the party could end up splitting over Mr Corbyn's refusal to back another referendum.
Watch the full interview here.