Cryptic crossword No 1,737

The QI spin-off podcast No Such Thing As A Fish is presented by Anna Ptaszynski, Dan Schreiber, James Harkin and Andrew Hunter Murray, with occasional appearances from Alex Bell and Anne Miller. Sandi Toksvig and Alan Davies from the main QI show have also appeared. The theme tune for the show is by the band Wasps. The middle row of across solutions forms the name of one of the podcast's one-time sponsors.