BBC live report about 9:55 On 15th May"

 Ms May's hopes of persuading Eurosceptics and the DUP were dealt a hammer blow after the so-called star chamber of Brexiteer lawyers rejected attorney general Geoffrey Cox's latest assessment.

Led by veteran Tory Sir Bill Cash, the group said his idea that the UK could use the Vienna Convention - the international agreement that lays down the rules about treaties - to unilaterally pull out of the backstop was "badly misconceived".

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It will be even harder to claim something has changed now as justification for Bercow to allow MV3. He will, I an sure, but I think evwryone will try to avoid explaining on what grounds.