The best thing we did was taking our son to an educational psychologist. The school screening test didn't help in the slightest. In fact, the school insisted on administering it after my son had had the official diagnosis and the screening showed that he was 'slightly at risk' of dyslexia - which was useless information considering we knew he was dyslexic by then.
The Directory of Chartered Psychologists have a directory here.
And / or you could call the BDA helpline here and they will probably be able to give you the contact details of a local educational psychologist.
My health visitor advised us on where to go - is there anyone you can ask, who might know of anywhere local?
It's not cheap. It cost us about £500 to have our son assessed
. The assessment took a couple of hours and he found it quite hard-going (though he was only six, poor boy). However, I have used the written assessment over and over again and we are thinking of getting another one done in time for secondary school, so that it is up to date. It was really useful to see exactly what his weak points were and to receive advice about how to help him overcome them. We have also been able to give the assessment to teachers when necessary.
Good idea to get his eyes tested too. My son turned out to have an astigmatism, which cannot be picked up on the school eyesight tests. In his early years at school, he was struggling with poor eyesight and dyslexia, so no wonder he couldn't deal with school.
If your son is dyslexic, it may be a big relief for him to get the diagnosis, especially if you can point out great role models to him of dyslexic people who have been successful (there are loads).
Best of luck
.