is this what I need to get?http://www.halfords.com/webapp/wcs/..._productId_379581_langId_-1_categoryId_255228
Yep but smaller I think. 12-13mm? Have a measure or look on the others. They're stamped with the size.
fixed the filter clip and moved it slightly away from the heat thank you, oh also put a new foam seal around engine but theres about 3-5 inches at the centre back I cant reach, is this ok?
The main risk is the foam getting sucked into the fan. This will cause the engine to overheat. You can get to it, it just hurts a bit as you have to force your hands down behind the fan housing. It is worth getting the job done properly. There is a knack to it. Start at the centre back ( behind the fanhousing). getting access from the LHS of the engine. As you move round it gets easier. Then move to the RHS of the fanhousing and work your way towards the engine lid.
^this. Fold the foam in half, mark the middle with a marker pen, then start in the highest bit behind the fan shroud, working your way round to the engine lid. You may need to get underneath to fiddle the tight middle bit through properly.