Thank you for all your replies!
Re. the confusion, yes I am GREY trying to go ASH, PLATINUM or WHITE Blonde. Not golden or yellow blonde.
RuggyPeg I wish we could meet up and talk about this. I have had some similar experiences.
I went to London hairdressers (though I live on the coast) expressly to try and get some ash / platinum/ white blonde highlights or slivers.
Unfortunately, hairdressers lied told me a load of nonsense and I ended up with that which I EXPRESSLY said I didn't want i.e. blonde highlights! I looked an awful ageing goldilocks. My natural grey was actually alot nicer and more flattering. They tried to correct it with more colour and toner. And my hair was nearly destroyed in the process, like straw.
Maybe ranout is right it takes a long time.
I do use great silver shampoos and conditioners (Mila) but still want to get a bit of ash blonde/platinum blonde oomph at least framing the face.
As I said, I've read its not really possible to dye grey hair ash/white/platinum because of the lack of pigment.
Thank you Mustard for the recommendation re. Mark Anderson. If I lived closer to London I'd give him a try.
The search goes on ....
At least I'm glad its not just me.