Nottingham City Transport 506 (10.05.2026)

Because the diesel E400's operate quite a lot of services on Sundays due to them being cheaper to run, the bio-gas buses from various routes can often be seen helping out on additional services on Sundays when there's football taking place at the City Ground. 506, a yellow 68/69 branded example, is seen on Meadows Way as it carries the vast array of football fans from Victoria Embankment, calling at all stops by request on its short journey towards the City.