Wombat, you are always welcome. When you get to "a certain age" then you can derive much pleasure from passing on just a little of the knowledge that you have acquired.
If you ever need help with any of the Telegraph crosswords, then come and join the gang on my blog at bigdave44.com. In less than two months we have built up to over 1000 hits every day, but more are always welcome!
Don Manley, the setter for today's Toughie, was one of our visitors.