Thank you for the advice Charlie. I think I will reserve this tactic for when I am even older and grumpier, if indeed it is possible for me to improve in the latter.
RT did not arrive until Thursday, by which time I was in SGH. However, by the grace of God and the good offices of CalMac, I have been restored to my life of idleness. Wolf clue wasn't very clever, but all in all, the crossword held no surprises.
Best wishes to all.
P.