Fraser Bond are the leading lettings and property management agents for Triptych Bankside - London SE1. Triptych Bankside is a mixed-use development in London SE1. The development comprises two residential towers, 14 and 18 storeys respectively, and one office building. New Homes All 169 open-plan homes will benefit from private terraces with stunning views. Amenities Amenities include 24-hour Concierge, Residents’ Lounge, Workspace facilities, a Games room, and a private Cinema. History The existing building was built in 1961 as the headquarters for the Central Electricity Generating Board.