The two I have in mind are Malvern St James and Wycliffe. Does anyone know anything about either?
Wycliffe Prep / Junior would probably be good for DD2. I've never been convinced about how well suited it would be with a G&T child (I'd consider Kings for G&T), but I've heard good reports about how they cope with children with varying special needs.
The buildings are good, great theatre, great music department, new swimming pool. They also had (assume they still have) an ad-hoc boarding facility should you need to be away for a few nights.
My only direct experience is of the nursery department, which was very good - but most of the children we knew there went to other schools (and were bright), private & state, and all are meeting up at Stroud High next year (and we didn't have to fork out Â£5K / year