Across
1 Cheerful light? (6)
4 Cook, soldiers and Finnish doctor put together key component of portal frame (8)
10 Superior lawn for example became place for artillery on boat? (7)
11 Functionary, Sam caught interrupting a trial (7)
12 Portuguese wine haven (4)
13 Call the French crew’s quarter (10)
15 Pillager to revolutionize in retrospect (6)
16 Certify spurious remedy (7)
20 Handle commotion on a road (7)
21 Introduce characters in the play first, for I enter the stage not in anonymity (6)
24 Type of math without lambda constant in this French key determinant of consumer segmentation (3,7)
26 Possibly in future, Bond turning competent (4)
28 Strange alien sign for a dizzy, confused state of mind (7)
29 Maiden in theater with 3D model of scene (7)
30 Massage parlor treatment with oil and a lot of grease (8)
31 Labourer drugged and tortured after losing a grand (6)
Down
1 Bag pipe learner lost in city (3,5)
2 Furthest inward store in Minnesota built (9)
3 Chair foam (4)
5 Motor crashed in river? Now the blue book value depends on this reading (8)
6 Defiant resistance within the Royal Engineer’s plant (10)
7 Alwyn Siqueira’s clothing outlet - trusted sources for neckwear? (5)
8 Trade batter without a ton to bring in a rookie opener instead (6)
9 Down the Spanish in a sweep (5)
14 How to profit on a process of exchanging information and developing professional contacts? (10)
17 Complimentary room on deck at a distance from the waterline (9)
18 Vegetable oil invented by conservative British company (8)
19 Theatrics perpetually in the cheapest accommodation on board (8)
22 Pups corner in grottos (6)
23 Miserable sounding music media? (5)
25 Illusion in flipped mirror reflection (5)
27 Bad alternative after an order (4)