Small(ish) nurturing secondary schools in SW London

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I'm sorry, this has been done to death but please indulge me, I just want to make sure I'm not missing anywhere. We are looking for an occasional place for an autistic girl with an EHCP whose main presenting need is SEMH. A warm nurturing mainstream environment with decent staff: student ratios would do the trick. The following are on our radar already (have ruled out some of these for various reasons) but if anyone has any other great suggestions, I'd be very grateful!

Hampton Court House
Kew House
Radnor House
Thames Christian School
Thomas's College

(The likes of Canbury, Wemm's etc are a bit too small/specialist for our purposes I think.)

A vote for Radnor soon to be Kneller.
my son has ADHD and dyslexia and they’ve been amazing. I love the grounded non -pushy approach that engages children to do their best and invites internal motivation rather than larger schools that may have to treat pupils as a number.
it’s small enough (66 in Y7) that each child is known and seen - and large enough for main stream sport etc
the new building and site will be fantastic

How about St Augustine’s?

Thank you - this is quite an old post, all sorted now!