Edinburgh East MP Tommy Sheppard said the party’s MPs could vote down any proposal that did not reflect the fact that 62 per cent of Scots voted to remain in June’s referendum.
He was speaking as he formally launched his campaign for the depute leader post left vacant by Stewart Hosie with a pitch to overhaul the party in readiness for a second independence referendum.
Sheppard, a former Labour councillor, said: “I’m not a party spokesperson but I’m pretty sure, and I will certainly argue, that unless the Brexit plan contains special arrangements for Scotland to allow us to have a different relationship with the EU, keeping our European passports while our neighbours in England and Wales lose theirs, unless that is there we will be voting down any Brexit plan that comes in front of the House of Commons and that’s something she [May] is going to have to take into account.
“So we are not completely powerless in this game. We do have some influence.”