If you're still looking for someone to look at your sons car, try a Company called Lextech or Toyodatech (he's resently changed his company name as I believe he's had some domain name issues with Toyota). You'll find his details on the internet. As his name suggests, he specialises in Lexus and Toyotas. He's based near Fareham so not that far from Portsmouth.

I do know though that there are some quite expensive issues with that 2.2 D4D engine. Be prepared!