I have been replying to a few post recommending my hairdresser so I thought I'd just post my thoughts here for any one interested.
I have had several horrific haircuts in Singapore by lots of different stylists the last one being at Toni and Guy at Holland Village, after 2 bad cuts I had to ditch him.
I have been lucky enough to stumble upon Allison who works by appointment only out of Katong Mall on the east coast.
She is brilliant, I have had 2 great cuts and I have my friends going to her now. Allison also specialises in colouring and imports her products from Australia so they suit western hair (no ginger roots).
Allison's mobile is 90178407 and she also advertises in Expat Living.