1.6 Petrol loud ticking on cold

[UKGTC]

I've not heard this on Vx cars,
But I've had similar noises on other makes - caused by the oil returing to the sump after the engine is stopped (it then needs a few seconds for the pressure to build up when started)
I changed the pattern oil filter to genuine one (and an oil change) on a couple of cars, and had to change oil pressure relief valve on others.
I can't promise this is your problem, but an oil and filter change is a fairly quick and cheap thing to try.

Hey niteram,

Thanks for your quick reply and sorry for my late one, manic weekend!

I'll certainly give the oil filter a go, do you think I should recommend that Vauxhall do this (i.e. under warranty?) where do I stand with asking them to do work?
The dash display says oil health is at 69% but I guess like the service interval reminder, it's a manually resettable thing...

Cheers