Video report by ITV Anglia Rob Halden-Pratt.
Six motorcyclists who took part in an “outrageous” level of dangerous riding in Bedfordshire and Hertfordshire have been banned from driving for more than 10 years.
The offences occurred south on the A1(M) Hatfield and along the A421 in Bedford on Sunday 13 April 2014.
Video footage released by Hertfordshire police shows them speeding at more than 140mph.
The drivers were spotted doing wheelies while standing on the seat of the motorcycle and another was seen overtaking and undertaking - both at high speeds.
The motorcyclists were disqualified from driving and ordered to pay £500 costs, after pleading guilty to dangerous driving offences St Albans Crown court.