Cheers – I think they use XT cables but will check with them afternoon. I think they're all much of a muchness to be honest but we'll see what they recommend too. Just wasn't sure whether anyone would sing the praises of Goodridge et al over the Rohloff / Shimano options. Doesn't look like it's worth spending any extra so I'll probably go with what SJS / Thorn's workshop say.
(Mine snapped this morning at the external mech but I can't really complain – they've done 6000+ miles without a hitch, should have been replaced last winter but I never got round to it – serves me right)