Walkers can visit the lengths of river navigation not on the Thames Path using the current towpath, except for two isolated sections of towpath not connected by any public path (or ferry) at either end. The first is a short section of path on the north bank opposite Purley-on-Thames; this is still shown on Ordnance Survey maps but is inaccessible except by boat, caused by the lack of two ferries formerly diverting around Purley Hall. The second and furthest downstream is a particularly picturesque section of towpath (again shown on OS maps) within the National Trust grounds of Cliveden; here the lack of three ferries accounts for the Thames path's diversion from the river at Cookham.
