Two strands of British comedy collide with utterly predictable results (all together now: “Oooh, Matron!”) as the usual crew is augmented by the sublime Frankie Howerd and a positively quirky supporting cast (Anita Harris, Peter Jones, Julian Orchard). Post-irony, I think we should admit the Carry Ons are dreadful, but Sid James’ laugh remains an imported national treasure.