Across
7* right-on RIG/H(ot)[TON]
9 hair H(e)A(v)I(e)R
10 tucking in CUT(rev)KIN/GIN
12* sat on S(ex)A(ppeal)[TON]
13 neoteric ETON (anag/mess) + RICE (anag)
15 span NAPS (rev)
16 T-bone TB/ON/E(nglish)
17* tons [TON]/S(mall)
18 art house AR<THOU>SE [500 = half a thousand]
21 misgovern M(ale) + SOV(e)REIGN (anag)
22 faff F(ling)/A(nswer)/F(emale)/F(emale)
24* Estonia E(ast)/(a)S[TON]IA
25* tonsure [TON]SURE
Down
1 Riga qataR I GAther (hidden)
2,19* Charlton Heston CHARL[TON]<H(orse)>ES[TON]
3 rotten ROT + solution for 10 across
4* baritone BAR<I(sland)>[TON]E
5* tongue [TON]GUE(st)
6,21* Eton mess E[TON]M + ESS [M&S]
11* Cantonese [TON] in A SCENE (anag)
12,20across* supertonic SUP/ER[TON]IC
14 Ionic impressarIO NICknamed (hidden)
16* Teutonic T(h)E (p)U[TON](p)I(l) C(lass)
17 tuna fish I SHUN FAT (anag)
20,8* Tonton Macoute [TON][TON] MAC<OUT>E
23 faro FOR A (anag)