You are looking for a small round clip container. Container is big enough for most of the trackables and small items
Please bring own pen.
It used to be a very nice walk on South Bank. Unfortunately with redevelopment and all new glass buildings not much of it is left.
It is easy to get here from Vauxhall station. I would not recomend to take a path from Battersea park. Power station and all surroundings usually busy with trucks and people.
William Henry Walk was named after William Henry who was Chief Engineer in transportation in late nineties. However personally I like much more another WIlliam Hery, the one who discovered Henry's law:
"At a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid."