GCSE/KS4 Maths resources aimed at autistic pupils

Hello all,

I'm a new maths teacher who'll be teaching at a SEND school specialising in autism from September.

I'm looking for good GCSE/Key Stage 4 Maths resources to build the maths practice at this school, as it is quite new; in particular I'd like to know of text books with good visual explanations, as this tends to be a good way to explaining new ideas for many pupils there.

Are there any maths teachers with experience in this area, or former/current GCSE Maths pupils, who have any textbook or other resource recommendations?

Thanks for your help!