A new, or nearly new, alloy-bodied saloon from late 1928, showing the style of the last R series before the introduction of the RK. This would appear to be a professionally-taken photo but probably not an official Austin photo - it's not in the usual rural setting chosen by Ron Beach and the surroundings look to be more London than Birmingham.
The property in the 1928 shot looks to be up for sale in 1930 (note the hydrant diamond sign is just visible behind the saloon) but I can't read the details on the For Sale sign to identify the location.
Edit: ChrisKC was responsible for the colourisation, the original is an LAT photo ref 539/5, so perhaps Austin Harris can enlarge the image to clarify the details on the sale board?
As this is a picture of Earls Terrace in 1932, it shows that this and the one in the original picture are different buildings. Obviously, with the Blitz and more recent upgrades, many London buildings such as Earls Terrace have undergone significant changes since 1930.