Just two nights after levelling The Academy Dublin and with Manchester’s O2 Ritz in their sights, Foo Fighters storm the O2 Shepherd’s Bush Empire for the second of three word-of-mouth, in-person-ticket-only club shows. No pre-sale frenzy. No dynamic pricing warfare. Just queues round the block and 2,000 devotees crammed into the Empire like it’s 1996 again.