1: Offering resistance, cattle run wild (9)
2: Drawing, for example, a bit of a cartoon (3)
3: Man, what an avant-garde US artist! (3)
6: Provoke Church of Scotland's absent leader (3)
7: Lug worm finally being a symbol (5)
10: Piece of tile in a solid floor (7)
12: Explosive device held by one failed candidate (7)
13: Gag about alien in Royal Childrens Hospital (5)
15: Chinese boat, craft produces sculpture from discarded material (4,3)
17: A highlight, a primary colour reflected into small pieces (7)
18: Wild rose engulfs one willow (5)
19: Ditch a worker is cutting (9)
22: Seaport of royal Tamerlane? (5)
24: Abundant specimen doffing cap (5)
25: Freshen the atmosphere (3)
26: Animal hiding in abattoir (3)
27: I am reported to leer (3)