Jumbo crossword No 26

Across

1. Excellent, one and one makes two of these diametrically? (5)
2. He collected tablets from Head of Medicine posed naked with bison's heart (5)
3. City by river in thailand presents elaborate maze (9)
4. Vacated Boston, with you picked up and imprisoned, gives cheek (3)
5. Bobby in Limerick maybe, enclosed in bubble, damply drained benefactor (5,5)
6. Honour king in Arthur's domain - essential pilots banished board member? (9)
7. Explosive cat, perhaps, frozen stiff without heater starting (6)
8. See 1a
9. Alcohol level of soft refreshments is impenetrable (10)
10. Rejection of religion stems from a position as youth leader (8)
11. Real? True, apart from false (6)
12. Salt's partner and salt included in common stock remains, in the main (7)
13. Regular request of Bob Holness covering last draft of script (5)
14. Position rook, nothing left, checkmate at last (4)
15. Alien I greet in extra-terrestrial movie (6)
16. Turncoats to create opera (5)
17. Lodger seen from a folly (9)
18. Thick foam on stout lavatory (4)
19. Cut a slithery snake (9)
20. Arthur, in short, reversed losses in frantic evil name game introduced on the move (10)
21. Refugee formerly 27 reportedly (5)
22. Essence of oregano garden, in retrospect, is threat to princess... (6)
23. ...in long-term unconscious state. Interruption by single male would give break. (4)
24. Matriarch, maybe, primarily exploits phobia for followers (5)
25. Clear credentials to enter tournament (7)
26. Listen to composer's sobriquet (6)
27. Question eastern quartet about note, after you heard principal buzzer (5,3)
28. Man's capital monicker (7)
29. Royal Horticultural Society stages a periodic intervention – returning to barren land (6)
30. Express comma? (5-5)
31. ...or lodge mostly in a state. (4)
32. 51 63 fruit (5)
33. This is represented by radio show briefly hosted by my namesake. (4)
34. We school her regularly after versatile thespian revealed as national treasure (9,4)
35. Yellow car race, endlessly receives love for Arthur's introduction? (5)
36. Might be slept on by Princess Theresa and Martin, finally all clear from apnea (3)
37. A setback in strawberry topping decision displays Stradivari’s home... (7)
38. Root of Questa o quella alto ringtone arrangement repels nan! (9)
39. 1 6 in 9d 3 e.g. God Rest Ye Merry Gentlemen? Yes and no (7)
40. Tolkien's goblin concealed precious, ultimately found in forest? (7)

Down

1. Provided meal interrupted by it coming back up - putrid! (5)
2. Swallow up hype (4)
3. Leader of pack unearthed a gold heap stripped of cable terminal (5,3)
4. Nothing to input for decision to abstain (3,3)
5. Capital sin overtaken by endless suffering - unkind at heart (8)
6. Poles coated in fat annually at extremes, while daily elsewhere (6)
7. Iron tank-top, a classic choice in a Greek taverna (4)
8. "Drink me!" captivates shrinking bibliophile following rabbit eye (6)
9. Runs away from wild leopard - exhibits craft (6)
10. Lacking game experience, jetison fish (3)
11. During trips away gets cutter (6)
12. Noble gas once discovered is thus (5)
13. 62 having man taken, yields advantage (4)
14. Detective's detailed register becomes abstract (6)
15. ABBA loses two members in wake of strange dance (5)
16. Tea accompaniment ceased production - milk gone in the end (4,4)
17. Crewmate Arthur serves hot beverage (3)
18. Midge, for example, pursues journalists causing stress (8)
19. Tusk's alternative smothered by climber (5)
20. Depict uncovered titanic (4)
21. Musical song set free... (3,2,2)
22. ...and also not opera without Marian Anderson leading (3)
23. Brainy, brawny dishes doff all caps (5)
24. Misdirected felonious undergrads, for example believing they are supreme commanders (9,2,8)
25. "Romeo Lima Out" concludes SATCOM message (4)
26. Martin overacting throughout instructional film intros - a recurring theme! (5)
27. Dogs in London, say, I will shortly catch (4)
28. Tasty! Eating a meal half-cut defines class of people (6)
29. Disguised samurai takes side in India (5)
30. Eke out second wave (6)
31. In-and-out course comes to 79's source, among others (3)
32. Snub ally, essentially of no value (4)
33. Astor drunken putdown (5)
34. Press symbolically half fees (4)
35. Drink to forget the penne salad (8)
36. Wow! North Carolina inflatable maize-store in Raleigh, perhaps (8)
37. Reorganise, e.g. amend objective (7)
38. Rowdy rejection is formal acceptance (5)
39. Allotment inventor you read books about originally (5)
40. Student you overheard pester, denied a breather (4)
41. Flight path Carl generated eschewing Lima (3)
42. Unjacketed, wears crop top (3)
43. Hat, pilot initially doffed before faceless Count, indicates passenger compartment (5)
44. Whitechapel fringe show (3)
45. Spot elusive character avoiding command to leave (3)
46. Her plane shifts his wealth abroad, excepting a pen said to be used for greetings to friends of Dorothy. (4,5,4,2,4)
47. Renaissance instrument torturing Olive endlessly (4)
48. Origin of blue earthenware safeguarded by woodland elf tribe (5)