I captured buses at Theobalds Road where buses of many types passes by. Routes 8 and 38 uses New Routemasters which can be seen on the video.
Few minutes later, a BYD eBus appears and operates on route 521. This is one of the two electric buses which operates two routes which is 507 and 521. Operated from Waterloo Garage, those two routes are open boarding where passengers can board and alight on any door