No they didn’t. When the Romans abandoned Brittania in AD410 it caused real panic in the population. Most of the native population accepted and imitated Roman culture.

Before we take this conversation any further I do have to declare an interest. I studied Romano-British Archeology at University.

Ah, you cheated! What I meant was that modern Britain isn't influenced by the invading Roman culture, at least sot so you'd notice. We seem to be influenced more by the US culture!