best colourist for blondes in Edinburgh, please?

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So, I'm a redhead ( not sure I'm allowed to say ginge...) and I don't live in Edinburgh. I say these things to explain what follows!

My good friend who lives overseas will be in Edinburgh soon and has asked me to see if I can get any recommendations for very good colourists for blonde hair in the city.
Would very much appreciate any suggestions. TIA

I don't have my hair coloured but I do travel quite a distance to go to Charlie Miller on south st David street and I have done for many, many years. I won't go anywhere else and Iain cuts my hair.

Thanks so much. That's really helpful!