This painting is framed and on the back is written Brill?. I felt this was unlikely to be Brill in Buckinghamshire as the trestle mill there was destroyed in 1906. This painting series and style is from the late 1930s. The surviving mill in Brill is not a trestle mill.
However, Gareth Hughes and Adam Marriott advise that, at the time of this painting, the round house was missing, exposing the trestle.