30503 was the only 30xxx to pass Battledown Flyover (3.08pm) with a down train of 8 coaches, working 1.24pm Waterloo - Salisbury.
Note the standby engine (number unknown) for the train conveying the Royal Family to Southampton New Docks, for their visit to NI, which was hauled by 34089 '602 Squadron'. (passed Battledown 1603)
With help from brbasterfield website