David Wasley (b. 1949) studied painting at the Central School of Art and Design and the Royal College of Art specialising in sculpture and print making. Later he joined the studio of Patrick Reyntiens for seven years and made studio windows to John Piper’s designs.
Since 1984 he has been making his own studio glass and painting
Source: The pamphlet ‘John Piper and the Church: A stained glass tour of selected local churches’, produced in conjunction with an exhibition at Dorchester Abbey in 2012.