Easy Learn produce a range of good quality photocopiable books for a range of subjects.
If you sign up to receive their monthly newsletter, they will email you monthly offers. This month I was able to download a Comprehension Book and a Dictation book free saving me over £20.00 each.
It is free to sign up and you receive an email- well worth trying for all SENCO's / Professionals/ Parents wanting to work at home with their children.