Two officer types (white collar) in this black Ford Fiesta were in the left lane of the Lancaster one way system speeding up because there was less traffic in an attempt to undertake and barge into the right hand lane.
I got a suspicion they were going to move over so closed the gap by going a little faster than the vehicle in front even though they were going faster than me, so as they started to undertake me the space was insufficient and they had to back off to move over behind me. It was obvious they were trying to barge their way in front.
I drive a BMW so I don't need to use indicators.