Ah yer, now i see!
The best place i can recommend in Southend is down Sutton Road near the old grey hound track, the place is a Porsh specialist though its not a rip off, guy is a friend of the family for years and is a decent honest mechanic.
Oh and seeing as your local ish a bit late notice in case you've not seen
http://www.seatcupra.net/forums/showthread.php?t=182711 feel free to join us!