Thanks friends for 'augur' - I kept thinking the second 'u' must be wrong, even though 'tuba' seemed to fit the relevant clue. I take Big Dave's point about the letters and numbers , but the Radio Times was at my son's house so I couldn't be sure about .. blah blah.
BY the way, the people at RT told me they get about 3000 entries per week, which they shove into a bag, and the first correct one pulled out is the winner. RT has a circulation of over 1,000,000 so are we a bit rare? Cheers
Uncle Arthur .