National Express operate direct services between Witham and Romford Witham to Romford is a distance of 24 miles (40 kilometres). National Express operate 2 direct buses per day. The fastest journey each day takes 0hrs 45mins. See our route guide and coach timetables below for more details. Doing a search on Coachfairer is the best way to find the fastest journeys by all operators and the cheapest prices!