Across

1Relapse when fractured spine is put right (7)

5But this animal does not come from the end of the world (7)

9Pair going away from the beginning, avoid discovery (5)

10A very tall glass for a long drink (4,2,3)

11Eggplant stuffing in French inn (9)

12Absolutely vertical (5)

13Delighting, for example, holding a tongue (7)

15Toiletry item discomfited a Soho MP (7)

17Wild West wear makes English composer hesitate (7)

19Leaders of top African politicians in old clothes apply starch (7)

21King snakes with grating teeth (5)

23Is this high flier an antenna repairman? (9)

25Alien camp destroyed bell-tower (9)

26Give the go-ahead to a constant beast (5)

27Whip well-bred fellow for touching (7)

28Crude erection? (3,4)

Down

1Spot youthful attendant for leak (7)

2Riffling thin album yields sketch (9)

3Arab chieftain meets a Muslim leader accompanied by oriental queen (5)

4Spooner smelling something bad in your pocket (3,4)

5Irish-American follows popular leader for this Greek hero (7)

6Be quick! Behold special instrument (4,5)

7Irritate as it is hot in the restaurant (5)

8Musical instrument the boor played (7)

14In lab work, at conclusion of experiment, Will is nowhere to be found (9)

16Nearby bull eaten by man, for one (9)

17Bean saw ten in crooked chart (7)

18Standing among others, Ali is a practical person (7)

19Attack flapping pet door (7)

20Busy community usually home to a queen (7)

22Disciple who must be followed? (5)

24A ring island (5)