This monumental factory was designed by Sir Banister Fletcher in 1936 for the Gillette razor company. Gillette has since moved on but they were still there when I took this photo and the intersection on the Great West Road (A4) is still known as Gillette Corner.
The horizontal bulk of the building is offet by the clock tower which when seen in close up features delicate stepped sections on the corner of the green cap.
Working the company logo and brand name into the fabris of the building is a nice touch.
For another view of this great building check out Pickles view at the Dog and Deco Blog.