Margetson painted in oils and watercolours. He made his name with portraits of beautiful women, often with modern hairstyles and hats. He also created religious and allegorical artworks. To begin with he worked in an academic, Victorian style. Later he would use a looser brushstyle inspired by the Post-Impressionists and the Pre-Raphaelites, and in particular Lawrence Alma-Tadema. His most successful work was the classically decorative The Sea Hath its Pearls which he exhibited in 1897 at the Royal Academy, now in the possession of the Art Gallery of New South Wales, in Australia.
Margetson also worked as an illustrator of books. He was married to the artist Helen Hatton, who he met when they worked on an illustration project together. He lived and worked first in London and later in Blewbury and Wallingford. He died in Wallingford, Oxfordshire, in 1940, at the age of 78.
Gallery
The Sea Hath its Pearls
The seashore
A Summer Evening
Poseidon's mistress on the shore
At The Cottage Door
A New Day
A Stitch in Time
Girl by a Lock
Cinderella and the Fairy Godmother
Faith
The Amulet
Nora
Alfred Lord Tennyson
Helen Hatton
Morgan le Fay from Margetson's illustrations for The Legends of King Arthur and His Knights (1908)