Thanks everyone!
Portland Place is sounding like a good option, I will investigate further.
Northbridge House location is perfect. I've read quite a few posts on this school, so many people seem concerned about the management of the school being very poor with lots of staff and pupils leaving? Am I being too fussy!?
Harrodian and Emanuel location is fine, but yes, I also thought these were becoming increasingly sought after and harder and harder to get in to?
I think Twickenham, Wimbledon, Kew are too far south unfortunately, though I would reconsider on that point if it turned out there were no other possibilities.
King Alfred's perfect location, I will check the entry requirements. Oh, I just saw up thread it's very very oversubscribed. Maybe an 'occasional' place at 13+?? Would it be very bad for a DC who likes a lot of routine and structure though? Also, we are not rich celebrities, but I'm not sure how much that matters?
St Dunstans the one in Catford? I got the impression that was very pushy academically, am I wrong?
St Chris', St Edmunds, St James, Thames Chris Coll I've not heard of any of these, thank you, I will investigate.
Southbank & International Schools I discounted these as I assumed the fees were absurdly high, but I will investigate.
AveEldon Unfortunately, none of the current Heads suggestions are very helpful.