I haven't heard of El Essawy, but I'm only learning about all this myself <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

Dr David Harvie Austin's contact number is (0207) 6372732. He was trained under Hal Huggins and has written a lot of things on dangers of amalgam and root canals etc. He is in Weymouth street, London, which is close to Euston Station. He gives oxygen supply and a lot of other precautions.

David Cowan has a website:
http://www.kingsburyholisticdentist.co.uk

Dr Austin can also refer you for a biocompatibility test for the new filling material at Biolab, London. You can get an appointment the same day and it's very simply done with a bloodtest and costs about £50. (extra tests are more).

I don't know how this compares to the vega testing, though, which one is more accurate. I got results in a few days that said I am compatible with diamondlite <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />