Hendra & Harper
Robert Leslie Hendra (1912-1968) formed a partnership with Geoffrey Felix Harper (1913-66) in 1947, with a studio in Harpenden, Hertfordshire. Both had worked for Hugh Easton and the studio would produce all Easton’s windows, including his famous Battle of Britain window in Westminster Abbey, along with the partners own stained glass, engraved glass, painted ceilings, and murals.
Source: A Life in Glass – Portrait of a Stained Glass Artist – The life and work of Geoffrey Felix Harper by Francesca Stevens (2018)