There are few jobs more dishonest than being a radio critic in Britain. I know this because it was how I got my first break 25 years ago as a columnist. In those days you used to get sent huge yellow envelopes full of preview cassettes, whereas now it’s all digital, but the fundamental lie is just the same: essentially you are telling the reader something they know not to be true — that BBC Radio 4 is a wonderfully civilised place to hang out, brimming with all sorts of marvellously fascinating programmes that transport you to another realm.