Still walking along the promenade from Sandilands to Sutton-on-sea.
For this cache you will be carrying on along the promenade passing seats, if you wish to sit and enjoy the view. As there is not much about this cache should be easy. You are looking for a magnetic nano, and will need a pen/pencil and tweezers. There still will be a lot of muggles as local people walk their dogs along this path and then beach.