When Rover was selected for production of Whittle's designs in 1941 at their Barnoldswick factory, Rover set up a parallel effort with their own engineers at Waterloo Mill, Clitheroe.
When Rover was selected for production of Whittle's designs in 1941 they set up their main jet factory at Barnoldswick, staffed primarily by various Power Jets personnel. Rover also set up a parallel effort with their own engineers at Waterloo Mill, Clitheroe.