Former Liberal Democrat leader Nick Clegg has warned Brexit will hurt Britain's economy, and said families face a £500 "Brexit squeeze" this year.
The Liberal Democrats are hoping for a comeback in this summer's General Election, having lost the majority of their seats last time around, with their number of MPs collapsing from 57 to just nine.
Speaking on BBC Radio 4's Today programme, Clegg said May will be aiming for a hard Brexit, and that such a course of action will harm Britain's economy.
Liberal Democrat MPs will work with other parties to ensure May doesn't succeed, he said.
Clegg will make his first speech of the campaign today, speaking about Brexit at 3pm. He will say Brexit "is already hurting the very people who need most help in society".
"So the question in this election is this: who will hold Theresa May accountable for the economic harm she will inflict on Britain?" he will say.
The former Lib Dem leader is standing for re-election in Sheffield Hallam, and it appears his record on keeping election promises is already getting him into arguments:
Clegg is not the only former leader spurred into action by Brexit. Former Prime Minister Tony Blair has revealed he is hoping for a return to politics, and plans on "reconnecting with voters", although he does not intend to stand as an MP in the General Election.