I had my hair coloured to remove the grey for the first time and got a style cut as well.
The result was exactlly what I wanted - very natural colour and no grey and a great looking hair cut.
The hairdresser was friendly and knowledgable.

I asked whether it's true they employee trainees and it is not - the confusion is in the name - The Angel Hair Institute in Mair St is the hairdressing college, but this has its own salon at cheap prices for the students to learn. I was told that all the hairdressers at Angels Evolution are fully qualified and many have years of experience. It certainly looked that way to me (I watched the proceedings while my hair cured for about an hour).