Across
Highland castle, central part opening, we hear? (6)
25a
Caution shown when playing king, fearful scoundrel nicking it? (6,4)
Test of right and left, all characters on the far left (4)
See 12
Vale on borders of Cymru, reportedly? (3,3)
10a
Square peg moved then to practise intuitive approach quickly, so to speak? (8,2,3,5)
Very old woman said to predict failure in honest spy (9)
In Potsdam, I design pots! (4)
Third note, then second note (4)
Travesty reversed in perfect game for children (9)
After refurbishment, Chinese restaurant at first improves (8)
Bony thing, angle on figure by the sound of it? (6)
Biscuit that's new behind unopened sponge cakes, filling hole (6,4)
See 4
Sudden flood of arrivals ruins new hospital (6)
Get back on with success (6)
Down
Where servers cut, machine with battery dead (7)
See 20
Amount produced revealed change (7)
Flower and rotten nut they leave on stage (6)
Old trainer in ring made of metal, iron (4-5)
Shrimpy shrimp went (3-4)
Pay cut with last of cheques in post, frantic (2,4,4,3)
A beauty has boss and I overwhelmed by lust (9)
Revealing garment, quick way to dress topless crime writer (7)
Fugitive better protected by witness after heading for Egypt (7)
Social life oddly uplifting for life form on Venus? (7)
2d
Picture puzzle endures, did you say, on mural, fancifully? (6,5)
Candies and chocolates and others: source of all of those? (5)
Type letters or click words in the clue