Do you remember the time when you used to pop into W H Smith for a paper, A4 lined-pad, a card for your Auntie Diana and a Boost? Of course you don't, because you were only six when people were doing such things. The no-nonsense 'stationers with a twist' chain of shops were as much a part of my childhood as paperback books and rubella. Latterly, they have been contributing to the adult prevalence rate for obesity of the Great British public by offering you three kilos of Cadbury's chocolate for 20 pence every time you buy some chewing gum.