Where you've seen Blue Lights star Sian Brooke before
The actress previously starred in Sherlock and House of the Dragon Sian Brooke is currently starring as rookie cop Grace Ellis in BBC One's gripping new police drama, Blue Lights. The six-part series follows Grace, a mum in her 40s, who leaves her stable job as a social worker to join the police service in Northern Ireland. But where have you seen Sian before? WATCH: Blue Lights viewers noticed this glaring blunder in episode one - did you spot it?