Athlone lock117Athlone lockHythe, kent112Hythe, kentTower Bridge120Tower BridgeSt Ives108St IvesBuckby top lock108Buckby top lockElmbridge96ElmbridgeThaxted exchange117Thaxted exchangeStanstead Abbots117Stanstead AbbotsTower bridge96Tower bridgeLeigh on Sea108Leigh on SeaThames barrier60Thames barrierPenhurst town hall88Penhurst town hall