Just a follow up to say we didn't get much further with this, Austin had a photo of Doug Copley on a Renault but no information on our car, we also found paperwork from Mr Copley's entrance to a hill climb in 1934 (We have since discovered this must have been mixed up in the paperwork when my granddad bought the car as it isn't related!) but we thought we found more! We also contacted Veteran Car Club UK and they plan to publish it in an upcoming issue to see if any other members may be able to shed light on it.
"In the 1930s, 40s and 50s primitive cars were often worth more as scrap than as cars, especially if they were incomplete, and VCC members would salvage them and keep them safe until someone could be found who would restore and care for them. I would guess that your car could well fall into that category. While some cars, especially those from ‘established’ manufacturers, were and are readily identifiable, there were dozens of smaller manufacturers who’s products are much harder to name. "
This also could be a final update as we've since had a family discrepancy regarding ownership so this may no longer be our mystery to follow.
Thank you all for the help in any regard.