Visible crew/equipment: When Sherlock and John get into the taxi in Baker Street (leaving to go to the scene of their first case) you can see a filming crane reflected in the back of the taxi.
Episode #1.3 - S1-E3
Visible crew/equipment: During Luther's call to Alice, a boom microphone's wind protector briefly enters above his head before the scene cuts. (00:23:35)
Visible crew/equipment: As Thomas watches the plane take off into the air, a car leaves, driving by him. As it does, you can see the cameraman reflected on the car.