Jersey moved five points clear at the top of National One following a 17-12 win over Cinderford.
Tries from James Copsey and Guy Thompson put Jersey ahead but Robbie Winchle scored for the visitors.
After the break Dave McCormack intercepted in his own half and ran 60 metres before touching down in the corner to score Jersey's third try.
Nev Codlin then went over for Cinderford to set up a tense finish in front of a crowd of 2,295 at St Peter.
In a thrilling conclusion as Jersey pushed for a fourth try, which would have given them a bonus point, Cinderford threatened to equalise with a touchdown of their own on the break.
Earlier teenage winger Chris Levesley had a try disallowed for Jersey and Rory Teague went close with a penalty which bounced wide off the post.
"We were poor defensively and I thought we were a bit naive," said Jersey director of rugby Ben Harvey.
"We showed in patches what we can do when we've got the ball and we play at pace.
"It does feel like a bit of a loss in the changing room because we didn't perform very well, and we certainly didn't perform like a side capable of going up.
"We've got lots to address but the boys will put a positive spin on it and we're still top of the league."
The win, Jersey's 14th in a row, puts the island side five points clear at the top of National One, after fellow title-challengers Fylde and Rosslyn Park both lost.
Cinderford drop a place to 13th in the table and their director of rugby Andy Deacon told BBC Radio Jersey: "In reality I think we should've won at the end or at least got a draw.
"I'm delighted in defeat really, to get a point and keep our very good start to the new year on a roll."