At a time when many factual programs are presented with flashy graphics, over-bearing music and dizzying camerawork, Coast presents something a beacon of hope. It manages to avoid being dumbed down by presenting just enough interesting detail at a sensible length without being too cloying in the attempt to be educational in a populist way. And best of all there's not a celebrity in sight to take us on their holidays, sorry, the journey.
Any thought that after three years of sea, sand and cliffs the format would be running out of material are put to rest to the extent that this series is perhaps the best since the first one. Sensibly the makers have spread the definition of the UK coast to include areas far away from mainland Britain such as Normandy and Norway, with the acceptable conceit that many years ago they would have shared a common coastline. This enables them to tell fascinating stories such as completing the story of the Shetland Bus by showing what happened on the other side, as well as items on the D-Day landings.
This all suggests the format can continue for a while longer. I hope so.