I know there are several threads on this (e.g. A3 3.2 2004 missfire), but for people's future reference...
Just had TPI 2010289/3 (SVM 8P01A005) applied by Swindon Audi. After a little confusion, once I gave them the SVM code, it all went swimmingly.
Took about 90 minutes of me waiting around (no hardship), car was given a once over and also cleaned inside and out… all for half an hour labour at the reduced rate, so only cost £39.
Car now drives spot on, no jerkiness or misfires, and also accelerates throughout the gears on part throttle (including from standstill) much, much more smoothly.
Therefore I can recommend Inchcape Swindon Audi, as of Jan 14!