I am looking for a reliable and highly skilled tailor to alter some suits for me that require major disassembly and possibly make some custom shirts.  Anybody have great experiences with challenging work and can recommend?  Location within Bangkok not important.

From past discussions on TV this is youir best bet maybe (if they do alterations): https://www.tailoronten.com/

 

I was told by a London Tailor that Art's Tailor are London quality but when I contacted them they said don't do alterations

 

in the past folks have recommended Raja's on soi nana for new suits and shirts...never had none made there meself...had some business shirts made in Chiang Mai, the tailor shop was attached to the hotel...they were very nice, all cotton, great fit and very comfortable...about USD30 a piece 15 years ago...

 

 

Tailor on Ten is definitely number 1 I would say, but not cheap.