Severndroog Castle ( actually a folly) is located in South-East London. This is an 18thC. preserved Gothic tower situated on Shooters Hill. From the viewing platform there is a 360 degree panoramic view of London. Meet 11.30 at the castle. Bring sandwiches, or enjoy the tearoom said to be filled with 'homemade treats'. If there is time and weather permitting, we could take a walk through Castle Wood and Oxleas Wood, both of which have nature trails. If you are…