Essex bus routes 255 and 555 are commercial bus routes in the county of Essex, United Kingdom. The routes were begun by TWH Bus & Coach, but were taken over by Lea Valley Buses of Loughton (Lea Valley Buses have recently gone into administration, meaning Olympian Coaches have taken over the 255, and TWH Bus & Coach are operating the 555 again — the situation is currently temporary. The routes serve the towns of Loughton, Debden, Waltham Abbey, Waltham Cross and Harlow. The routes operate in competition with a few Arriva bus routes, including the 250, 251, and 505. The 555 replaced TWH's previous route 55, which also operated between Loughton and Harlow, but via Epping and North Weald.