Don’t know about that. People have drowned. The tide does come in fast. They used to mark the path with broom sticks—that’s how it got its name. It is an established right-of-way and used to be the only way to get to some location. But unless England is rising at exactly the same rate as sea-level, it pretty much puts the lie to the ‘seas are rising’ business.
I checked and it’s a different area, the salt marshes near Sutton Bridge:
https://www.bbc.com/news/uk-england-norfolk-30964882