Try
Venhill Engineering Ltd. 21 Ranmore Road
Dorking Essex.
tel 01306885111 Caroline Duffell
e-mail is
caroline@venhill.co.uk
Ask for a catalogue
I use there featherlight cable in stainless steel wire/Teflon liner and heavy duty conduit. With all the nipples that you require.
They can supply standard kits for clutch and throttle
regards Peter