Southall's compositions are generally fairly static and his subject matter traditional. Images are "flat" in both the Modernist and Mediaeval artistic senses. I am tempted to use the term "decorative."
That said, his works are pleasing, if not awe-inspiring.
That's a self-portrait of Southall himself at the left.
Related to the Great War that ended late that year.
Those visitors are quite fashionably dressed: an interesting painting.
The Internet-sourced date confuses me. I doubt Southall would have been in south-central France any time that year due to the war and the country's fall to the Germans in May-June (though Cahors was in Vichy France). Note the trees in leaf, a May-October thing. Therefore, if the date is correct, the painting was made in his studio or else the painting was made, say, in 1938 or 1939 when France could be visited casually.