UK Car Inspection Service?

[kosch]

Hello

Hope this is the right subforum to post in, apologies if not.

I'm looking at buying a car from a private seller and was hoping someone could recomend a good vehicle inspection agency (Cambridge, UK).

So far I've found the following

AA Full £195
AA Basic £156
RAC Basic £132 with member discount
RAC Full £175 with member discount
Dekra Basic £120
Dekra Full £159

Could anyone comment on the above services or know of any better & cheaper ones?

Thanks

Kosch