how good are the pre-preps in wimbledon

[rukmal]

I would be grateful for your advice on how good are the private pre-preps in wimbledon and can anyone recommend a good pre-prep in this area

I don't know any of them from personal experience but if you're interested in KCS at 7 or 8, then The Rowans and The Squirrels are both owned by KCS. Typically they take around half of their 7 + intake from those two schools, I've heard.