Currently available on 3 streaming services.

Streaming, rent, or buy Callan – Season 4:

Currently you are able to watch "Callan - Season 4" streaming on Britbox Apple TV Channel , BritBox, BritBox Amazon Channel.

Cast

Edward Woodward
David Callan
Russell Hunter
Lonely
Anthony Valentine
Mears
William Squire
Hunter
Patrick Mower
Cross