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At one point, The Soldier Soldier star stopped to talk to a member of the crew as they waited on the set of the long-running 1950s-set detective series.
In January, Robson told Metro that he became disorientated and his 'heart rate went through the roof' because he couldn't see his co-stars' expressions and process what was happening during rehearsals for the latest sixth season.
In character: The actor, 56, who plays DI Geordie Keating, sported a brown pinstripe suit as he continues filming scenes for series six of the ITV drama
The star - who teams up with actor Tom Brittney, who plays Reverend Will Davenport, to solve crimes in the popular programme - said the coronavirus rules had really changed acting.