Well thank you Gonzo I have learnt something!
I spend most of my time flying in countries with 3rd world style ATC and always enjoy my time in UK airspace from the perspective of consistent and safe ATCers. I did get a little bent out of shape one day in a London airport when the situation you mentioned happened. I could not for the life of me understand why, if I said I had ATIS "X" the del controller wanted a readback on top of that with the QNH, which is obviously contained in the ATIS. I thought he/she was just being a pedant!