Actor

Derek Riddell

42 credited titles on WatchWise

Derek Riddell (born 11 January 1967) is a Scottish television and theatre actor. He is best known for the portrayal of Richard Cawood in the BBC One television series Happy Valley. He is also known for Gentleman Jack, Industry and The Missing. He has guest-starred in Doctor Who, Ugly Betty, Silent Witness, Waterloo Road, and Shetland. Riddell was born in Glasgow, the son of teacher and former actress Hope Ross and former St Mirren and Berwick Rangers footballer Ian Riddell. He graduated from the University of Strathclyde with a degree in business, before training at the London Academy of Music and Dramatic Art, graduating in 1990.

Derek Riddell in one minute

Strongest genre

Sci-Fi

$5.6M · 50% hit rate

Biggest hit

Twilight Zone: The Movie

$29M

Standout efficiency

2.9x

Twilight Zone: The Movie · gross ÷ budget

Commercial performance

Associated lifetime gross

$8.6M

Combined reported budget

$12M

Gross / budget

0.7x

Bankability Index

8 / 100

All figures are associated, not attributed — box-office numbers are sourced from TMDB and Wikipedia (reused under CC BY-SA), shown in US$, and weighted by billing prominence. Coverage varies by title; figures are estimates, not audited trade data.