Its all original parts. Needed a stalk (same as VW, Seat, Audi), loom and connector (about 50 quid in parts iirc). When its all assembled, cruise had to be enabled in the ECU with a laptop and a VAG-COM cable connected to the OBD II port... took under 2 hours to get it all working.

That Vauxhall cruise sounds terrible! Did they not test that? Damn. I don't think my cruise can be enabled under 1300rpm-ish so there is virtually no chance of stalling.