来自英国的问候!

恩，来自英国的问候

英国人民发来贺电（呵呵，这个更nice）

It depends on the context. Are you saying it to a person to their face, or are you using it as an expression like: these letters are greetings from England. The replies below are more apt for the second case. Saying 来自英国的问候 to someone´s face just sounds weird.

英国的问候。