Renault Espace V6 Auto - rough running

[Renn Sport]

My brother owns this 2000 Renault Espace 3.0 auto and its running really rough.

Recently he has had the following work done.

Rebuilt ZF Autobox £££££
Cambelt change and all spark plugs and coil pack. £££££
Full service £££££
O2 sensor replaced ££££

So after spending an absolute fortune on this car the fking thing drove back 240 miles to london sweet as a sweet thing covered in very sweet chocolate. Yes I have been watching Black Adder.

Now a fault light is on and the car is running very badly. I am reluctant to take it to the poeple we have used because I feel they are just throwing parts at it.

1. Can anyone reccomend a Renault specialist that is good a fault finding? Also who doesn't charge £85 a plucking hour!?!
2. Is there anyone who understands these flipping machines?!?

I feel sorry for my poor brother as he's shelled out alot of money on this bloody thing. Its run for 4 years without a hitch and now its done him in.

If anyone can help it would be apprecated.