A slow slog this week.
30a Biscuit's trademark unknown still (6,4)
Looks like 'brandy snap', but in what sense can 'snap' mean 'still'?
33a One reacts to base smut furiously in new titles (6,4)
Litmus test. I can see the anagram but don't understand the definition.
7d Like beans and egg, mostly? Eating it is brilliant (10)
L?g?m???u?