EZ line and Boyes invisible mending thread.(it's just like a monofilament fishing line )
Boyes is a shop that sells almost everything, branches dotted around most of Yorkshire. The mending thread is " smoke "coloured , 0.1 dia. You get miles of the stuff on a cotton reel for about £2, I bought a reel about 8 years ago and used it on every bi-plane and ship I've done, still got loads left. There's a Boyes in Driffield!!
We could get you some just in case they are closed when you come.
Haddock.