I have had the £325 contouring done that you would mainly see advertised on twitter.i must say it is absoloutely not worth it as the job only took 5 minutes to do the dentist did not even need a nurse for assistance. The service was pleasant and I guess you cannot expect much for that price in Harley St which was my own fault for going. The chat and consultation took longer than the actual procedure which is probably what you pay for :D , To sit on a chair for 5 minutes and have work done that doesnt really make a difference is really not worth it , all I had done was have my teeth filled down which dont look the greatest. Service is really pleasant and makes you feel really welcome !