Car fixed with new cam chain and in the process they fixed the minor oil leak. Local VW/Audi specialist, £506 not too bad I didn't think for a timing chain tensioner, full refill of oil, plus the investigated a mysterious rare loss of powersteering (it cut out on my street the other day on the way to the garage!) But couldn't find anything there, no fault codes etc - possibly needs a new battery since it's still on the original. They had the car for a day and a half so I thought the price was very reasonable. I seem to remember it cost similar for a timing belt change on a previous car that took a day.
The car seems smoother now and hopefully the mpg will now improve as the timing should be spot on.
The car seems smoother now and hopefully the mpg will now improve as the timing should be spot on.