http://www.designeralterations.com/ in Battersea is supposed to be good. I have not used them myself but was recommended and they seems to be busy. Appoitment is required. I hope it helps...

Thank you

http://www.barbarathedressmaker.com/ - I have used before Barbara, although she is not local and quite expensive.
Would be great to hear some local recommendations...

Hi, Can anybody recommend a Good dress maker for alterations, it is a very expensive item and the work needs to be perfect. Thank you