Chuka Umunna has been upping the pressure on Dave over Sunday trading laws, accusing ministers of misleading Parliament and writing to the holidaying PM to demand clarification. Last night he snorted:

Could you imagine Labour's fmr BIS Sec,Peter Mandelson,allowing another cabinet minister to dictate policy on his brief as Pickles is doing?

— ChukaUmunna (@ChukaUmunna) August 14, 2012

Clearly Chuka has forgotten all about Labour’s attempts to deregulate Sunday trading restrictions, when old boss Gordon Brown tried to force the then Trade and Industry secretary Alan Johnson into adopting the policy. The FT reported at the time:

“Tony Blair and Gordon Brown are tacitly supporting deregulation of Sunday shopping to allow 24-hour trading for large shops, according to a leading industry lobbyist. The lobbyist insisted there were differences between Mr Brown and Mr Johnson. “Gordon Brown wanted to include deregulation in the Budget, but Alan Johnson put the brakes on,” he said.”

And they weren’t even in Coalition…