This cache could be done as a cache & dash and is accessible for a wheelchair but help would be needed to retrieve the cache.
The official footpath route goes over the planks that bridge the ditch but this hasn't been used for years as the field entrance is right next to it and the little 'bridge' can be overgrown and slippery.
The road alongside isn't used by many cars but is a popular dog walk route for locals.
You are looking for a cylindrical clip-lock container.