Slowed up by 7 down which was new to me and had to look for help even when I’d all the crossing letters and knew it was an anagram. Solving time, 25 mins.
* = anagram < = reversed
ACROSS
1 SLATED deta(i)ls<
5 PECK Double definition – an old measure of dry goods
9 PROCRASTINATOR (Air transport co)* Nothing to do with what might happen on Easter Monday as the clue misleadingly suggested.
11 EASTERTIDE (dire estate)*
12 S NAG
14 RE-PROVE
15 M (INAR) ET (rain)*
16 VERBE (N) A (beaver)* N = end (last letter) of green
18 GALL (IV) ANT IV = 4 in Roman numerals
20 TA-TA Territorial Army
21 HE S (I) TATION
23 VLAD THE IMPALER (D – origin i.e. first letter of Dracula lethal vampire)* &lit, I guess
24 IRIS(h)
25 RAT I (O) N O = egg Bizarre surface
DOWN
2 LORDS SPIRITUAL (Pious RRs – it’d all)*
3 TICK E D OVER
4 D (RAF T) EE
5 POTS DAM (mad stop)< In 1945 (end of WWII)
6 C(r)ANE
7 ET IN ARCADIA EGO (eradication age)*
8 F RIGHT
10 (c)LEAR
13 UNPLEASANT (annual pest)*
16 V OT I’VE Old Testament
17 AGELESS Stage less age = st (saint) i.e. ageless stage
18 GRIMMER Glimmer with R (right) for L (left) (one side ousting another). The ‘here’ showed which was correct, I think, as that changed letter was not confirmed by inclusion in an across entry.
19 T(a)INT
22 STAR hidden