The firm of James Powell and Sons, also known as Whitefriars Glass, were London-based English glassmakers, leadlighters and stained-glass window manufacturers. As Whitefriars Glass, the company existed from the 17th century, but became well known as a result of the 19th-century Gothic Revival and the demand for stained glass windows, mostly for churches

Agate Glass in Eastcote N W London have carried on th tradition of creating stained glass windows and normally have a range of Whitefriars glass collectibles in stock