Good evening, last set of clues for which I seek answers, after which, I hope, the theme should be quite clear! Thanks in advance!
37 ( A ) Frothy half of beer May brewed (5) : R??M?
3 ( D ) Worrying cockney’s getting fiery (6) : ??T?N?
31 ( D ) Bummer footwear (6) : L???ER
32 ( D ) Walk like warden outside? (6)