Main thing to look for is a scraping metalic noise on cold start up and or a metalic rattle on cold start.
Where abouts in gloucestershire are you?
Other parts to get while doing the chain/chains are a new timing case gasket a crankshaft pulley seal and bolt, oil and filter. and possibly rocker cover gasket depending on condition.
Also have a good look at the water pump housing on the drivers side behind the engine these sometimes leak so if it is you'l also need a gasket for that.
Other problems are EGR faults and oil messing up the inlet and throttle body.
Also look for play in the steering rack and rear rose bushes and trailing arm bushes :thumbup: