Year 5+ mainstream independent good for dyspraxia

[jumpupanddown]

I really want to find a lovely mainstream independent school that goes through to secondary with small class sizes that is non selective and not desperately concerned with exam results and testing and happy to consider and can support a child with dyspraxia (quite pronounced motor skill difficulties and some related academic challenges) that needs some additional support (which we are happy to fund). We're in North London, but will consider Hertfordshire, Middlesex, Bedfordshire and schools throughout London.
Would love people's thoughts on where might be right. Desperately trying to generate options that aren't going to a specialist school or starting my own school!

[Secondaryhelpneeded]

For a boy or girl?

[mary21]

St Christopher's Letchworth? Egerton Rothesay Berkhamsted?

[Hotcrossbunsandcheese]

Egerton is not mainstream. If you can venture a bit further round - Shiplake would be my suggestion