There will be joy over Labour’s victory at the trades union congress this week – but also a determination to see that promises are kept

Twelve months ago, when the TUC met for its annual bash in Liverpool as Labour stood on the brink of power, Keir Starmer’s message to union leaders was “eyes on the prize”.

Fresh from thrashing out the details of Labour’s workers’ rights package – the new deal for working people – in late-night talks, union leaders were upbeat.