Napoleon

Pandora and the Flying Dutchman

The Black Rose

The Last Days of Dolwyn

Bonnie Prince Charlie

Anna Karenina

Nightbeat

An Ideal Husband

I Know Where I'm Going!

Henry V

A Canterbury Tale

This Happy Breed

Shop Girls of Paris

Secret Mission

The First of the Few

How Green Was My Valley

The Thief of Bagdad

Jamaica Inn

Elephant Boy

Rembrandt

The Ghost Goes West

Verdun: Visions of History

The Ring

The Chess Player

Walter Percy Day O.B.E. (1878–1965) was a British painter best remembered for his work as a matte artist and special effects technician in the film industry.
Professional names include W. Percy Day; Percy Day; "Pop" or "Poppa" Day, owing to his collaboration with sons Arthur George Day (1909–1952) draughtsman, Thomas Sydney Day (1912–1985), stills photographer and cameraman, and stepson, Peter Ellenshaw, who also worked in this field.

W. Percy Day