All the across answers are types of cheese.
| 1 | Pro(cess,E)d |
| 6 | c=circa, ream |
| 9 | Cab, O.C. |
| 10 | anag. |
| 11 | Hidden |
| 12 | anag of 'hand is', blue=depressed |
| 14 | Cab(RA)les |
| 16 | C(ant)al. |
| 19 | Che(v)re |
| 20 | Rac(l.)e,TT,E |
| 23 | neuf=9, chat = cat, El. = elevated railroad |
| 25 | Goa,T |
| 28 | Il, Chester |
| 29 | R(o)ule |
| 30 | rev. of Morse |
| 31 | anag. |
| 1 | 2 def'ns |
| 2 | Or, bit |
| 3 | (p)each |
| 4 | 2 mngs |
| 5 | Dub, rev. of nil |
| 6 | stuff = cloth, Gewandhaus = cloth hall (ref. Leipzig Gewandhaus Orchestra) |
| 7 | hidden |
| 8 | Ma(N,S,E)ll |
| 13 | anag. |
| 15 | 2 def'ns |
| 17 | Tut(ankhamun) |
| 18 | solutions referred to both show a 'name drop' |
| 19 | Can(did)e |
| 21 | ex,T,REME |
| 22 | G(a St.)ap |
| 24 | anag. |
| 26 | Leo tail first =OLE, radiation = UV |
| 27 | E.R., i/c |