Thanks for all the ideas, I really like the sound of the scrubs you suggested sheeplady.
I have just tried olive oil + lavender oil, massaged in, bag over, then under the dryer. Although I massaged shampoo into my scalp before I wet my hair to get it out it's been a bit of a nightmare, mainly because the oild seems to have mixed with the flakes to form what looks like bit of rubber! I had to brush it hard then wash it out again to try to remove them.
Sheeplady's scrub next I think, my poor hair!