Across
1
Top GP’s intense (anag) – it helps one get on (8,5)
8
Cream or Crosby, Stills & Nash (4)
9
Surveillance operation (8)
20
Grow sickeningly sweet (4)
21
Globe-trotting – Etonian griper (anag) (13)
Down
5
Bird and bat droppings used as fertiliser (5)
11
Demonstrating exceptional skill (8)
13
Last stages of a contest (7)
16
Cinema or theatre lobby (5)
18
Bones or necessities? (4)