@gt2andy We’re exempt from speeding when necessary and proportionate – so the legal answer would be none. Post navigation National Highways: South-East retweeted: #M25 anti-clockwise between J18 and J17, near #Rickmansworth. The outside lane is closed due to a collision. Vehicle recovery is at scene. Delays of 40 minutes above normal journey times – 4.5 miles of congestion. @gt2andy And from a purely basic approach, not much more as he eventually got stuck in traffic.