I suspect I am being thick but there are two options for setting the time either Manual or GPS.

GPS is clearly more accurate but when I use this setting, using the time zone London GMT, the time reads one hour ahead. i.e. 0800 reads 0900.

Has anyone else had this problem?

It's a bug. The setting needs to be changed to 'Europe' via VCDS for the GPS clock to work correctly. 

Is there not a tick box for Summer time ( think thats what its called ) in the setup, remove or add the tick and it should dshow the correct time. this is used to add/remove the the extra hour when the clocks alter

Is there not a tick box for Summer time ( think thats what its called ) in the setup, remove or add the tick and it should dshow the correct time. this is used to add/remove the the extra hour when the clocks alter

Yes but it won't allow you to put a tick in the box. In any case we are on GMT now until the clocks change.

http://www.briskoda.net/forums/topic/380829-superb-mkiii-vcds-adaptations-tried-and-tested/

 

Post no. 15 has more details.