I think it's fair to say that when the Mr. Bean shows were originally broadcast that they were hugely popular and well loved. The first movie wasn't considered to be quite up to the same standard and the character is probably not as highly thought of now as he should be. I think there is also a snobbishness in the U.K. that dictates that if any character is popular overseas that he shouldn't be popular back home.
The Johnny English character again was massively successful when appearing in some commercials. But the movies have received a mixed response.
Blackadder is still considered to be one of the finest sitcoms of all time and Not the Nine O'clock News and The Thin Blue Line still have plenty of admirers.