Yes they did a really good job. You could drive there, remove the cluster in the car park, let them fix it and then refit the cluster to the car and drive off. I would ring them before had to make sure that are able to fix it while you wait.
I've just bought my first 1. A stilo 1.6 dynamic 3 door. It's only a cheap run about. I thought the only problem was as he said the cat. However it looks like the airflow filter needs a clean out but I noticed the lcd light on but no information on it so I guess that's the cluster and its gone. Someone has had the dash off and not done a very good job putting it back together. I was going to take it all off again to fit it back properly (a guide would be great - not looked yet but if ones posted, it'll be appreciated) thinking that might fix the problem. Now I know that is unlikely. I've also ordered a ODB connection and already got the best app.