Nottingham City Transport 428 (05.02.2021)

After 330, a new style spare Optare Solo SR, had covered the sky blue 46/47 route, the Bridgford Bus 7 route in between operations from the branded ADL Enviro 200 MMC of 307 and the navy 3 route after taking over from the branded Optare Solo SR of 346, this was one such of the allocations closer to home that I couldn't find any information about, so I set out to find out what was what and it turned out to be a 17 plate bio-gas spare on the 6, as illustrated here. 428 climbs Trevor Road with a 6 to Edwalton.