Last 4 to do:
1A. 8 cats 9 (9) - - A - - - A - E
9A. Rolls? This vehicle does (9) - - C - - - T - R
1D. Degrees for 1 across (5) - - - - S
3D. Register reverberates (4) - - - -...
6D Welsh support for what's pledged in song (6) W-A-E- Can only think 'WHALES', as some people pronounce Wales and Whales the same way, (and this compiler frequently uses English-type homophones), but...
Last 2: 4D Rome's focus; capital PM banks (6) H - A- - - (might be H - A - S -) 13D Bread-and-butter & board (6) - - O - E - (might be O - O - E -) 12A Pearl's degrees (6) W - - - - - (if WISDOM, then...
I'm having problems with the bottom LH corner. 23A Stood in for made stand out (8) - I have RELIEVED Which leaves: 21D Car 8 comes up (4) - R - - 22D Design (4) - L - - - could be PLOT or PLAN 24D By...
Last two: 6A Talk of fiddle centre having to go (4) - - - T. Could it be EMIT? 7D Period identified by 'ANH'? (4,2,4) - - L- A- H - U -. Is it 'MILE AN HOUR'? Any suggestions gratefully received....