Question Author
Thanks, Roslyn!
I had just done it myself, with the help of the solution wizard of 'Crossword Clue Solver', which gave me BANXRING. This put an X in 13dn, so it was fairly easy to look up in Chambers, and get DOXOGRAPHER (which the wizard didn't throw up). 'MoreWords' didn't have doxographer either, only demographer.
Trish