Mr Farron, leader of the Liberal Democrats, also told Julia Hartley-Brewer that he isn't interested in "doing deals" with other parties - but suggested he'd welcome the backing of Tony Blair.
Announcing plans for a snap election yesterday, Ms May said she wants to secure a more convincing mandate for Brexit. But Mr Farron rubbished this idea, saying she simply wants a "coronation" and is cynically hoping to capitalise on "the most shambolic official opposition in British political history" in the shape of Jeremy Corbyn and Labour.
Turning to Ms May's plans for a 'hard Brexit', Mr Farron said it is ridiculous to suggest it is impossible to remain in the single market after leaving the EU, and suggested the Tories have "stolen UKIP's clothes" with a strategy that makes even Nigel Farage look soft in comparison.
It has been speculated that the Lib Dems could join forces with Blairite Labour MPs to fight the election, and that even Tony Blair could work alongside Mr Farron's party.
Mr Farron said he'd "welcome support from wherever it comes from," but said "the idea of doing deals with other parties is a non-starter."