Recommend me a good but cheap garage in North London

[CTR]

I'm looking to get some work done on the missus' polo and on my civic and in need of a decent and reliable garage in our area.

Work to be done on the polo is to sort out a few issues with the electrics. Work to be done on my civic is to replace the front drivers side brake caliper and possibly sort a gearbox issue.

I don't mind going to a back street garage as long as the work is done to a very high standard and is very reasonably priced. Any ideas?