Heyy (: need some information about schools in London..?

hi I'm a 16 year old student from Rome,Italy. I'm really bored of italian school and I wanted to experience a few months studying in an english school in London. I'm half english half italian so I speak both fluently and I also speak spanish really well and I know a bit of french. Do you know any schools in the area of Richmond, Sheen, Barnes, Mortlake or somewhere near there that do like exchange or something like that with Italy or might do them.. If it can help I'm in the fourth year ( of five ) of high school.. (: thank you so much xx