KB, MIME type: image/jpeg) [ edit ] Summary Description English: East London (Stagecoach) bus 18477 (reg. LX55 ESF), a 2005 Dennis Trident 2 double-decker with Alexander ALX400 bodywork, pictured entering Whipps Cross roundabout in Waltham Forest , London , operating London Buses route 257 en route to Walthamstow . Date 21