I just happened across this by accident but the BBC is showing a new five-part series in which explorer Paul Rose walks the 630 miles of the SW Coast Path – Britain's longest national walking trail. The first episode just went out and you can catch it on iPlayer here: Coastal Path.
After walking a couple of bits of the SW Coast Path last year (photo is from Lizard to Kynance Cove), and reading The Salt Path (highly recommended), I've become a bit obsessed by SWCP. Hopefully this show will do it justice.