A couple of months ago Charles Spencer wrote a column complaining that London’s West End had seriously deteriorated and that the area was so rundown it was discouraging theatre-goers from going to the theatre. “It is too early to talk of a Broadway-like renaissance of the West End,” he writes now. “A zero-tolerance crackdown on vagrancy, loutish drunks and aggressive begging in the West End is urgently required.” But things seem to be getting better…