I was channel hopping the other day, and – as is often the case – ITV3 were showing old episodes of the Brett Holmes. This one, though, was slightly different: the feature length version of The Sign of Four, which seems to have had a significantly higher budget than the hour-long episodes. I didn’t watch the whole thing – in fact, I tuned in very close to the end – but that was almost exactly the right moment to realise, with its comedy Welshman and hideous Africans, that this piece of television is now more than 23 years old. Criminy.