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Michael was also spotted filming scenes with another smartly dressed man as they strolled down the street talking.
The actors were joined by an extensive camera crew as filming continued in a shopping district near Manchester.
Work: The actor, 54, looked smart in a grey suit and blue shirt which he wore under a stylish grey coat as he filmed scenes with another man
Serious: The star completed his look with a red and blue striped tie as he spoke on the phone in another scene
The series also features Line of Duty star Martin Compston, as character Daniel, however he was not seen at the shoot in Stockport on Monday.