Henry's Glasgow Boys phase lasted into the mid-1890s when he and fellow "Boy" E.A. Hornell spent more than a year in Japan. Henry's paintings made there retained many characteristics of his Scottish works. Perhaps because of changing fashions and the need to support himself as an artist, Henry soon thereafter began painting in a more traditional fashion. So whatever modernist traits were used in Glasgow Boys art were largely abandoned and few others were incorporated to even a slight degree thereafter.
Below are examples of Henry's post- Glasgow Boys painting. Dates are included where known, but most seem to have been made between 1900 and 1930.
An example of Henry's Glasgow Boys era painting to set the scene -- not one of his better ones, however.
His Glasgow Boys paintings were set out of doors, but now he tries an interior scene.
Henry also did portrait work to make a living.
An interesting, and not characteristic Henry painting -- though the landscape in the background has his touch (see "Sussex Landscape" below).
Here Henry recalls Japan with a kimono-clad British woman. The treatment of the foliage weakly echoes his Glasgow Boys work.
Henry painted landscapes while a Glasgow Boy. The color schemes were fairly similar to this, but the subject matter was depicted in a more decorative manner.
I'll guess this was painted around 1910 or 1915, and like it a lot. I think Henry made the woman's face interesting, and the toned-down color scheme is pleasing. It might have been improved by reducing the sharpness of detail for her left hand (it pulls the viewer's eye too far to the right).