I Cryptic Crossword 588 Help!

[zencryptic]

need a little help with last few clues.

22a hot springs brought back swallow around channel island? (7)
7d some heavyweights, heading for certain defeat inside 10 making comeback (7)
19a man with peas rippling pitches guys around canvas? (7)
18a learnt to cycle around harrys front entrance (7)

Thanks for all your help in advance!

[Calibax]

18a Enthral

[frugalfred]

22a thermae (Channel island Herm) + eat backwards

[zencryptic]

Thanks so much. Just noticed I made a spelling error. 19a is man with pecs (not peas)

[glasman]

19a Encamps

[Captain2]

19a Ahh Encamps? (anag of man + pecs)

[zencryptic]

Thanks again! :) only one left to solve

[Captain2]

In 7d What is the answer to '10'?

[glasman]

Have you any letters now for 7d?

[zencryptic]

Letters I have are as follows.. _O_ _ _ _I
the answer for 10 is, hand me downs. Not sure if its related.

[bibblebub]

7d) colossi

[zencryptic]

That's brilliant thanks, can I just ask, how did you get to that answer?

[dannyk13]

7d.Colossi

[bibblebub]

sorry for being so late

COLOSSI [=some heavyweights]

heading for Certain = C
defeat = LOSS
inside = put that inside...
10 making comeback = OI

C OlossI