regular oil changes are very important on the 1.8turbos,
the oil pick up pipe is well known to get blocked due to old oil which causes major problems including wrecked engines,

also if you do change the cambelt make sure you change the water pump aswell as they are also known for breaking up due to the plastic impeller.


where abouts in london are you?
i have vagcom on my laptop which would allow you to scan the car for any faults logged on the ecu.