Thanks for the replies, I think I;m considering buying a replacement car instead of repairing the DSG box as I probably need a change after 10 years of ownership.
For info the DSG (direct Shift Gearbox) system comprises of a 6 speed gearbox with a twin clutch arrangement and electronic control system. The system automatically uses the twin clutch to seamlessly change gears based on throttle input and other factors. A DMF flywheel is used to smooth out imbalances in the drivetrain much like a manual car but the clutch is a multi plate arrangement a bit like a motorbike. Its a good system and works well but the DMF flywheel wears out the same as on manual cars. I guess I'm lucky to have done over 170k miles without issue.
On the other hand I guess that £1300 isnt too bad if it keeps running for a while longer, decisions, decisions 🙂