Pushing a bike is no different from pushing a pram though, I’d have thought.
Ah, the Joys of R v Mathias
As with a bike being pushed, a pram on a public footpath can/could, in certain rare circumstances, potentially be a public nuisance and therefore prohibited, there is no general rule, it would be a matter of fact in the individual case.
Crank V Brooks is the oft quoted defence regards pushing a bike on a pedestrian facility, however its not been tested with particular reference to a public footpath.
I’m not saying he can stop the OP from using the path if it is a ROW, but I believe he can stop him from using his bike. Pushing the bike over might be a grey area.
This
If the OP does get actually issued a notice, he should contact the offroad team at CyclingUK… 😉