Sunday's Westminster Hour abandoned its usual politics panel and featured throughout a pair of pundits instead. They commented on all the issues raised. They were Nick Watt of The Guardian and Professor Philip Cowley, who works as an advisor in the Treasury's policy unit. Prof Cowley is set to be the new David Butler, the BBC's former chief election night pundit. One of the subjects was class. David Cameron's poshness came under sustained attack. Election or no election, Westminster Hour never changes.