I have always thought that the series went downhill after the excellence of series 5, but rewatching episodes of series 7 I have to say that it's far better than I remember. Series 6 did feel a bit awkward in some parts, and I felt that the character of Penny Bidmead simply didn't work. Series 7 works a lot better, partly because she's gone, and mostly the quality of writing has far improved.
A note on the ENDING that a lot of Brittas fans seem detest. I always thought of Brittas Empire as a rather over the top show with quite a bit of fantastic elements in it that stretched believability and credibility. These are things like keeping babies in drawers, people coming alive after being flattened, stuff like that. But you enjoy yourself too much that you accept such quirks and accept it as part of the reality of the Brittas Universe.
In the end of the series, we see Brittas waking up from 2 "dreams". He wakes up and he sees himself as NOAH, and then he wakes up for a second time to see himself on a train before he becomes manager of Whitbury Newtown. Well, consider this: What if that is a dream as well? Would it be too unbelievable within the context of the Brittas Universe for him to wake up again in Series 8, back at the center, after being knocked out by a flying goose?
In fact, the ending is FULL of potential. Since the end established the notion of Brittas waking up to a realities populated by the staff of Whitbury Newtown in different roles, it opens up the series to some tantalizing possibilities if they decide to do another series.
What if Brittas wakes up in the first episode of Series 8 as Captain of a starhip called the Centerprise? Where Colin is an Engineer of dodgy engines, Helen is the pill popping Doctor, Laura is the emotionless Vulcan... and at the end of the episode Brittas is knocked out again and in the 2nd episode he wakes up as the captain of the Titanic, and so it goes for the rest of the series until at the very last episode, he wakes up back at the center, after being knocked out by the flying goose. He looks up to Helen and says, "My Darling, you'll never believe the dream I had!"