Just wondering where people get their service kits from, in my case for a 2004 2.0 diesel (oil, air, cabin, fuel).

I'm quite fond of the idea of keeping my first born when I get around to making one so I'm not going to a Main ******* for it.

I can see all sorts of kits on the internet and the price ranges massively, so I was just wondering what you guys that do it yourselves buy?