Rick is very good with diesels and even better with petrol cars . He tuned my 3.0 TDI and did a great job, There's some pictures and stuff on my build thread for the A4. Just booked the TT for a stage 1 map .
He's just up the road from Manchester airport, so not that difficult to get too and well worth the trip. https://www.facebook.com/UnicornMotorDevelopments/