According to Major Apple’s locations mentioned earlier in this post, here are some other locations I have been able to “map” for you.
The church Lynn got married in (and Mark Foster got buried !)
50°53'5.64"N 1°18'24.27"W
The Station
50°53'1.85"N 1°18'17.94"W
The Elephant (Mermaid) boatyard
50°52'57.30"N 1°18'18.15"W
According to MikeM, Sir Edwards House is Somerley House in Hampshire, if you search on “Somerley House, Hampshire” a house does pop up, not sure Google Earth has it pinned correctly as slightly below it is a much larger house.
Sorry, not too sure exactly which one is Jacks Cottage, and there are several marinas that could have been leo’s surf shack, if any one has anymore information I will happily drive about and have a little investigation about this or any other local building.
As I said earlier, I was only young when it was initially shown, so can’t remember lots of details!!