this delivery van Rolls-Royce 20/25 is one of a pair of delivery vans built by coachbuilder Vincent of Reading for a distillery called Justerini & Brooks, J&B Scotch Whiskey

  https://www.mecum.com/lots/1087900/1933-rolls-royce-20-25-delivery-van/

https://www.flickr.com/photos/dmentd1/21891643240/in/photostream/