I'm off to Jersey 8th - 11th. Like you, looking for a poke while there. No such luck! Put in the postcode on AW of the hotel I'm staying in. 10/12 came up. However, most were asking £150+. Not prepared to go that high. Those asking less, to date haven't even read my messages to them.
The fetish scene is alive in Guernsey and Jersey. There's a group called Channel Islands BDSM on Fetlife. But the only way to get a meet, is to go to one of their munches so they can suss you out. None in Jersey until I'm gone. Guess I'm gonna have to try my luck with the locals or tourist?