This page of the CAA website contains a link to a pdf file with a list of all FTOs approved by the CAA. They are listed under different categories.
As I said, many of them advertise here so you can very quickly link to their websites. Just click on any advert that comes up for a school - good for PPRuNe too as it keeps their stats up for advertising revenue!
Don't worry about your English here. Work on it before your groundschool though - my old employer can put you in touch with a company near here that can help you. The groundschool itself will finally sort out any language problems! If it isn't good enough you won't pass all the exams and you'll have to resit until it is.