Telegraph crossword

Across 1 Be idle (4)

3 Secure (4)

6 Broadcast (3)

9 Mimicry (13)

10 Unharnessing (8)

12 Sewing case (4)

13 Drunk (3)

15 Task (6)

18 Platform at sea? (3,3)

19 Interval (3)

21 Simple (4)

22 Greek dish (8)

25 Equestrian contest (5-3,5)

26 Sheep (3)

27 Footwear (4)

28 Border (4) Down 1 Building with exercise facilities (7,6)

2 Quick; character from Rainbow (5)

4 Fruits of the oak (6)

5 Dutch cheese (4)

6 Pilot (7)

7 Persistent confrontation (7,6)

8 Decelerating (7)

11 Gunk (3)

14 Disposable handkerchiefs (7)

16 Substitute (7)

17 Embankment (3)

20 Spud (6)

23 Winning (5)

24 Doing word (4)