I would disagree with Perryman on the difficulties of getting into Prendergast HF as it has a much wider catchment now and it is not unheard of for children as far as in Nunhead to get in on the second round of offers.

I have a child at Harris Crystal Palace and they have just finished a major refurbishment so the facilities are very good but I suppose it depends on what you are looking for.

The journey to the Sutton Grammars is about 35-40 minutes (don't get off at Norwood Junction. go to West Croydon as the trains are more frequent from there as more come in from Victoria). Also, it is possible to pass the tests without extra tuition because I know of a few children who have got in without it.