The old Offices and factory at the rear have been demolished.
The building used for the Offices were an old laundry block and apparently taken over by Bristol Cars in 1951.
Here is a link to Flickr which shows the old buildings when a Laundry:=
https://www.flickr.com/photos/brizzl...-nWuV5d-7dNLSo
The Bristol Cars offices/factory are now the Shield Retail Centre fronting the old A38 Gloucester Rd., North and the outlet Snow & Rock outlet occupies the
the position of the offices.
https://www.google.co.uk/maps/place/...6!4d-2.5747722
Hope this helps to pinpoint the location.