‘What’s worse, they’re paying the profits to shareholders,’ said a grey-haired woman ahead of me in the Co-op queue. ‘Bloody shareholders,’ her friend of similar age and class spat back. I guessed they were talking about Centrica, parent of British Gas, which at a time when domestic energy bills are rising 23 times faster than wages (as Frances O’Grady of the TUC puts it) has announced half-year operating profits of £1.3