Across
17d
Hobo managed fun runs in a piece of Somerset? (2,5,7)
See 1
Large lady's eating last of cake, a little down (7)
Crook runs through life energetically (3,4)
Navy tour in it at sea? Goodness! (9)
Flipping East End pastime includes nothing rough (5)
Channel as start for sail across the Atlantic (5)
Said what VIP spotter will do is fine in the main (9)
Aristotle tinkered with system for the better (9)
Bill ducks a subject to be ducked (5)
Voiced disgust in music hall (5)
Mastiff's tail wags around great group in pack (4,5)
It helps to see nurse with eccentric clothing (7)
To the west, a cool and a green Pacific region (7)
28a
Great aid agreed, keeping Arab land waiting (7,7)
See 27
Down
How to get food from a waiter out to lunch? (3,4,7)
Try, after tax rises, to cheer (7)
Papers theatrically exaggerate revolutionary Muslim leader (5)
Stood up cold topless Dutch egotist (9)
Painter's reason to take the bus back? (5)
One tending to brood and attack animal (5,4)
A European gets stuffed by British athlete (7)
21d
Way of saving face, so only come in disguise (7,2,5)
Chap sadly back around houses in Spanish city (9)
Bad debts covered by firm; investor finally cheers up (9)
See 1
Instrument or article with two round objects (7)
Make a career in China, India or another country (7)
See 8
Second home providing returns in the end (5)
Pull in outside of Lille, stopping vehicle (5)
Type letters or click words in the clue