Regarding the Albion bus, some images for illustration purposes.
The bus in this photos is refered as being Albion Valkyrie PW65, bodied in 1931 with a Cowieson B32F body. Unfortunatly this only the chassis and cab survive today...
In first photo and second, they shows a external foot stand to the drivers door (despite being higher), as showed on the IWM photo. This can be a chassis feature or a body detail, but it is unique to all the photos that I have looked, as all other similar photos had this feature recessed. They also show the driver door open to the rear, and the point where it toutches the front wheel mudguard also looks very similar..
The number of body panel segments between the wheels seem to be the same too, four, from the drivers door, with the fifth ending over the rear wheel mudguard arch.
The bodyword details differ in some points, like the style of the side trims (groved on middle, with a downslope at the rear), the recessed handle on the driver door, or the rear wheel mudguard arches that are more flushed with the bodywork.
One other point is the front wheel mudguard arches, both extend to the front and look to be similar, and that bar connecting them at the front, looking closelly, tha IWM photo has also something there too. Again, this is a feature that I only find on photos regarding this model.
On the first photo, also no fuel fill recess, that can be just "see/feel" on the third image, between the door and the wheel arch, just where they usually were located.
Sources:
https://www.flickr.com/photos/92215343@N04/9563444363/
https://www.flickr.com/photos/21611052@N02/47743627611/
https://www.flickr.com/photos/92215343@N04/9563444773/
https://www.flickr.com/photos/george...rs/2680245274/
https://www.flickr.com/photos/63093849@N08/15420176272/
https://www.flickr.com/photos/iainrobbie9/8507595746/
Original IWM image
https://www.iwm.org.uk/collections/i...ject/205187213
Some more technical information about the bus chassis:
http://archive.commercialmotor.com/a...t-of-the-scott