It was the best trip ever!
I reckomend Kaplan Cambridge because the there are good teacher, funny activity leaders and awsome people. There is a big mix of nationalities of the students. There are great activites with school like club & pub evenings, puntings, daytrips, weekend trips and parties. Studying English in UK is a very good way of learning English because you meet other nationalities. You can reach London from Cambridge by train for 1 hour and a half. I reckomend you to live at a recidence becuase that's in the central of the town so you can be out very late with out to have go home by taxi or walk very long.