How Can You Map These Rainforests in Britain?

There doesn't seem to be a map of these amazing rain forests am in britain. So i sildi wanted to start to explore this by asking people to help me out. I shall give pehaps maybe one or two clues to people though. It's most likely tha you're going to find a rain forus if you're in the westbritain. But they do occur in some other places, in other parts of the country. Where there's the micro climate, our effects can allow these rain forests also and t also thrive.