The following websites and details may be helpful.
RCSLT
The Royal College of Speech & Language Therapists.
ASLTIP
The Association of Speech & Language Therapists in Independent Practice.
HCPC
The Health and Care Professions Council
Talking Point
Information for parents and professionals about children with speech and language difficulties.
I CAN
A national charity providing information for children with speech and language impairments.
AFASIC
An association set up to provide provision for children with speech & language difficulties.