The advertising agency that created the image of a tiny Ed Miliband poking out of Alex Salmond’s pocket is relishing the chance to turn its creative guns on Jeremy Corbyn. M&C Saatchi created posters in the run-up to the general election that included a wrecking ball smashing through a sign emblazoned with the slogan “A recovering economy: don’t let Labour wreck it”, as well as billboards that suggested Labour’s leader at the time would end up in the pocket of the Scottish National Party.