I found this quite easy, solving time 14 mins
* = anagram < = reversed
ACROSS
1 DEC (December) A MP
5 DRAW BACK (vb)
9 ME S(M)ERISED (desires)* – it’s also reversed, as it happens, but nothing wrong with it, of course
10 G RAY Thomas Gray – Elegy Written in a Country Churchyard, for example
11 ‘EIGHT E’EN
12 E STATE
13 RESULT hidden
14 (p)RESIDENT
16 SUZE RAIN (Zeus)*
19 SAL (UT) E (TU = trade union)<
21 SH (R) IFT
23 HE ADGEAR A in (raged)*
24 STUDents
25 MOS (QUITO) ES
26 TH (WART) E D
27 AR (DEN)T
DOWN
2 E (REMIT) E GrEEce
3 ALMSHOUSE (souls a home)* less o
4 PORT ENT
5 DISENFRANCHISED (Fiendish dancers)*
6 AD DRESS
7 BIG OT
8 CHASTE N
15 D (E LEGATE) D
17 UN H ITCH
18 A T TEMPT
19 SPATULA (up a salt)*
20 TRA (DE) – IN Ed<
22 INDIA (aid NI)<