Kieran seems to be the man of the moment - Drysuit Repairs
Latex Neck - £45
Neoprene Neck - £50
Latex wrists - £25 each
Boots [neoprene boots with rubber outer] - £90
Zip - £145 [heavy duty zip available for an extra £25]
Pressure test and minor repairs - £20
Polar Bears in Launceston seems to be £47 a neck, wrist or ankle.
Know this chap well, Bodmin based, called Dave - drysuitrepair.co.uk
Latex Neck £40
Neoprene neckseal £50
Latex Wrist £40 per pair
Neoprene wristseals £50 / pair
Ankle Seals £40 per pair
Latex Socks £45 per Pair
You ca buy the seals and glue on the internet and a bike repair would work on latex, especially as you're only surface use.