The furious debate began when Labour MP John Mann said the European Parliament elections are in June 2019 and Britain must leave before then or risk being "back in" the bloc for another five years.
Speaking on BBC 5 Live, Mr Mann said: “We’re going to be out of it by then and whether drugs policy or fisheries policies are sorted out now, or in some cases, in ten years time, it's not that important.
“What’s important is that we, in each case, are getting the best deal for Britain. Some of that should be done immediately. Some of it can actually be done in the longer run.”
BBC host Emma Barnett then asked why the SNP’s Philippa Whitford had pulled a face following the comments made by Mr Mann.
BBC 5 Live
Brexiteer John Mann said that not all Brexit trade arrangements will be sorted by March 2019
In response, Ms Whitford said that British people depend on the drug policy sector. She said: “Well, simply, the idea that drugs policy can just be left and sorted in ten years time, it’s not even being talked about when I asked in PMQs about the European Medicines agency back in January.
“It was clear the Prime Minister didn’t even, wasn’t really that aware of it. It wasn’t even on her agenda. People depend on these things for their lives.
“If we end up with tariffs, it puts up NHS costs. These things can’t just be thrown into the long run.”
But the Brexiteer hit back and said Ms Whitford was wrong. He said: “But, you’re so wrong on process because the default position is, if we haven’t sorted something out, we will keep what’s there until we do.
“That’s the default position. So if we’re in a particular European body five years or ten years, perhaps forever because we think it’s a good thing, we can decide that.”
Theresa May amended the EU withdrawal bill so that Britain will pledge to Brexit at 11pm on 29th March 2019.
Brexit Secretary David Davis has also given in to MPs by saying that parliament will have a take it or leave it vote on a final Brexit deal.
He announced the concession in response to former attorney general Dominic Grieve’s amendment which calls for a “meaningful vote”.
But Mr Grieve said Mr Davis’ compromise was not good enough and confirmed that his amendment would remain in place for the time being.
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