Whilst it was quite an enjoyable hour in itself, it suffered from the same problem as a number of other similar programmes such as Seven Ages of Britain and Stephen Fry in America in that it felt like a snapshot whirlwind tour, when you feel that actually there is the potential for a much greater depth and number of programmes / series.
At least with Coast, someone had the foresight to see that you could make many hours of television about our coastline rather than wrapping it up in 3 shows or whatever. But then again Coast is on BBC 2 where the Beeb still (just about) trusts its audience to have an attention span of more than 10 minutes, perhaps they think that BBC 1 documentaries have to 'move things along' every few minutes. It's a shame because in the same manner as Coast you could have a Secret Britain featuring say, Devon and Cornwall one week, then maybe Lancashire the next and so on.