Does the thought of being able to use your mobile ‘phone on the tube fill you with dread? Actually, that’s probably a little excessive but being underground has always been the one sanctuary from the calls (admittedly, you have to switch it on to be reached – which is something that I must learn). At least it’s only on the stations. The thought of people talking on a packed train in a morning really does fill me with horror. It’s bad enough on the overland trains.