American is too fast

I have been speaking American for a number of years but I find it hard to understand in a conversation since they speak so fast. I might go to England in the hope of learning their version which I hope is slower. Would this be a good choice?

IMHO English people speak a bit faster than Americans do.I can see it by watching contemporary British and American movies. Often Americans speak like they barely closing their lips; and this way of pronouncing takes time.The British way is smoother and so faster. Again: it's only IMHO