Across:
1 Those from the stable (lads = LA-DS) going over the heads of idealistic, rich (heads of ‘Idealistic Rich’ = -IR-) (LAIRDS) overseas landowners (landlords in Scotland = LAIRDS),
4 Sloppy (SLAPDASH) mates (pals) falling over (= reversal indicator) (pals = SLAP-) on Dart (dart/sprint = -DASH) (SLAPDASH),
9 Month (NOV-) that’s a danger to driver (-ICE) (NOVICE) – the one with the N-plate (NOVICE),
10 In agreement (AS ONE MAN) with a (A-) relative (son = -S ON-) over (= reverse indicator) name (name = -E MAN) (AS ONE MAN),
12 Therapy on (therapy on) set (= anagram indicator) (therapy on = HONEYTRAP) for a seductive deception (HONEYTRAP),
13 Bottle spirit (a spirit in a bottle = GENIE) consumed by revolutionary (= reverse indicator) Seine gondolier (consumed by revolutionary ‘sEINE Gondolier’ = eineg = GENIE),
14 Rig in no (rig in no) shape (= anagram indicator) (rig in no = IRONING) for directors (BOARD) (IRONING BOARD) employed in the business of laundering (IRONING BOARD),
18 A different response (COUNTERCLAIM) to what you might hear alleged at the bar (COUNTERCLAIM),
21 Colourful type of bird (MACAW) swallowing a fair amount of (half) fish (carp) (half of ‘CArp = -CA-) in big mouth (maw = MA-W) (MACAW),
22 Places (SETS-) for those working on boats (-CREWS) (SETSCREWS) used by handyman securing position (SETSCREWS),
24 Took place (OCCURRED) of copper (-CU-) consumed by criminal (= anagram indicator) record (record = OC-RRED) (OCCURRED),
25 Outlaw (BANISH) bar (BAN-) is (-IS-) near hotel (-H) (BANISH),
26 The Crown (HEAD-) is on television (-SET-), ultimate phones (ultimate ‘phoneS’ = -S) (HEADSETS) and other hands-free devices for listening (HEADSETS),
27 Charm (AMULET) broker away from troublemaker (‘broker’ away from ‘ troublemaker’ = tulema = AMULET).
Down:
1 Hang (LYNCH -) picture – the first (‘Picture’ the first = -P-) at home (-IN) (LYNCHPIN) of person vital to the business (LYNCHPIN / linchpin)
2 Drunk (= anagram indicator) vintner (vintner = INVENT-R) swallows nothing (-O-) (INVENTOR) produced by pioneer? (INVENTOR),
3 Criticise (DECRY) writer (Ed) upsetting (= reverse indicator) (Ed = DE-) Bellow (bellow/yell = -CRY) (DECRY),
5 Bank repossession (LOST PROPERTY) office for those looking for something (LOST PROPERTY office),
6 Eulogy (PANEGYRIC) for Pole (North Pole = -N-), for example (e.g. = -EG-), consumed by reward (pay = PA-Y-) from old police force (Royal Irish Constabulary = -RIC) (PANEGYRIC),
7 Type of milk (ALMOND milk) produced by spider from Promised Land (‘spider’ from ‘Promised Land’ = omland = ALMOND),
8 One of those following the game (HUNTER) organised (= anagram indicator) the run (the run = HUNTER),
11 Slow to react to (DRAG ONE’S FEET) mythical monster (dragon = DRAG ON-) from the banks of Egadi Islands (banks of ‘Egadi islandS’ = -E’S) with dog’s paws? (FEET) (DRAG ONE’S FEET),
15 Is responsible for The Gate’s production (IRONWORKS) of Club (golf IRON- club) Functions (-WORKS) (IRONWORKS),
16 Duck (duck cotton/canvass = type of MATERIAL) in fish net – presumably that’s a yarn! (fishnet MATERIAL),
17 A huge success (SMASH HIT) for Ashley (-ASH) “Rocky” (= anagram indicator) Smith (smith = SM- HIT) outside (SMASH HIT),
19 Shoot (shoot) adaptation (= anagram indicator) (shoot = S-OOTH) around Malin Head (‘Malin’ head = -M-) (SMOOTH), as it’s as flat as a pancake (SMOOTH),
20 Account (AC-) by a (-A-) group of spies (-CIA) (ACACIA) – one is a plant (ACACIA),
23 Sounds like (= homophone indicator) a test (‘a test’ = ‘attest’ = CLAIM) of State (state/declare = CLAIM).