Hydrogen fuel cell powered 799201 passes Spetchley on 5 September 2023 with the late running 5Q91 11:47 Kings Norton Signal SY57 to Gloucester Signal G356 mileage accumulation run. Unfortunately upon reaching Gloucester the unit was declared a failure, and the return run, the 5Q92 12:59 Gloucester Signal G339 to Long Marston, had to have the assistance of 37884 Cepheus, which was on hand at Worcester for just such an eventuality.