All 3 that I unfortunately encountered today.

No.1. Sat at the front of a filter lane at traffic lights, moved off so slowly and continued to drive very slowly about 100yds up to next set of lights and stays in the outside lane, that I (2nd car) just about made it through as lights changed, 3rd car couldn't make it. Normally 8-10 cars can get through.
No.2. Proceeds to drive down outside lane of a slip road at 30mph holding up cars and lorries, whilst the inside lane is empty meaning everyone is forced to try to merge unsafely with 60-70mph traffic on the dual carriageway.
No.3 Drives at 20mph through a 30mph zone, brakes for no reason in a contraflow traffic calming measure even though he had right of way and there was nothing coming in the opposite direction. Accelerates back up to 20mph, even though he is now in a 40mph zone, brakes again to take a sweeping bend, actually achieves 30mph now even though he is in a clearly marked 50mph zone on a straight road. Turns right at traffic lights even though he never indicated, and proceeds to straddle the white line separating the two lanes of a dual carriageway, preventing me from overtaking. He continues to drive at 30mph now in a 60mph zone, to then stop half in the main fairway and half in the plenty big enough gap in the central reservation for turning right once again preventing me getting through.
Based on the fact they were the only 3 A6's I saw today, a fair assumption they all drive like that.