A bit of history from the Roberts Cycles site:
The Roberts family has been building top-quality made-to-measure bicycles and frames for more than 50 years. Charlie Roberts started working as a frame-builder after WWII for some of the great names in British bicycles – Holdsworth, Claud Butler and Freddie Grubb. Among many outstanding achievements, his track frames were particularly highly regarded by the cognoscenti – professionals and Olympians alike.
Chas who now runs the business today worked for several years as a hard working apprentice before he was allowed to start building frames with the Roberts name.