My personal experiences walking all 19 National Trails in the England, Scotland and Wales; cycling the North Sea Cycle Route; the Atlantic seaboard from Land's End to John o'Groats via Ireland's Wild Atlantic Way, and campervan trips to Scotland along the NC500, Orkney, Shetland and the Western Isles
England Coast Path
The England Coast Path is due to be completed in 2020. Sections are open and work is progressing. The map below is at July 2018 from the http://www.gov.uk website.