Identifying old autos is far tougher than identifying old stamps! So many tiny automakers existed in the days before WWI, and many of them have very little surviving documentation. I knew I probably wouldn't find the answer with a quick search. But it's fun to look at old car pictures anyway, so off I went.
The design feature that instantly jumps out for me is the radiator behind the engine. That wasn't unheard of, but it certainly took away the easy use of airflow going in to the radiator as the car drove down the road. Apparently cars of this type often had fins on the flywheel to generate wind that helped air flow through the radiator.
I used that as my starting point when searching through old images. Surprisingly, what I found were a bunch of French cars. Radiators behind the engine were common in France back then - I didn't find much at all from British manufacturers.
Here's an example that clearly shows the radiator, on a 1911 Renault. If you decide to spend a bunch of time trying to identify the car in your photo, you can use the radiator as the starting point.