Update:
Undertook probably one of my biggest and most daunting jobs this week while off work. Took a long time but enjoyed it and happy
Replaced:
Spark plugs - BKR6EIX
Timing belt - genuine Vauxhall
Exhaust roller - genuine Vauxhall
Intake roller - genuine Vauxhall
Timing belt tensioner - genuine Vauxhall
Water pump - genuine Vauxhall
Lower Timing belt outer cover - genuine Vauxhall
Inner Timing belt cover lower retaining bolts - genuine Vauxhall
Outer Timing belt cover upper and lower retaining bolts - genuine Vauxhall
Aux tensioner - genuine Vauxhall
Aux roller / idler - genuine Vauxhall
Aux belt - genuine Vauxhall
Refurbished:
-Engine mount bracket - stripped, ground/sanded, painted
As an aside, it is interesting what I found, given the belt was last replaced by a very trusted specialist! Despite supplying a lower, outer Timing belt cover, they didn't replace it, probably as the inner retaining bolts came out connected to the outer cover and they couldn't be bothered to do anything about it. The allen hole on the tensioner had been rounded and subsequently had a torx bit hammered into it, how and why I will never know, probably trying to tension clockwise rather than anti-clockwise. Water pump had loads of silicone sealant on the back, as they clearly they couldn't be bothered to just clean up the mating surfaces. Only smallish things in the scheme of things, but glad I've now added this job to my list and feel confident I can do it to a standard that I am happy with!