Below are some of the craftsman services that I have used personally and would recommend.
Simon does some of the best work when it comes to Austin Seven Ruby upholstery. He can provide you with everything you need from seats to headlining. We Recommend Simon and use him for our work.
If you want Austin Seven parts there are lots of people selling different bits, but we use and recommend David.
Paul is an Austin Seven Semaphore Trafficator Restorer, and if you would like someone to look at yours or repair them then we have used Paul in the past and he does a great job.