Video of police vehicles being rammed released by Essex Police
Video showing police vehicles being rammed by two cars in separate incidents has been released in an attempt to trace a suspected burglar.
A Cambridgeshire officer was injured when his motorcycle was hit on the M11.
Two Hertfordshire officers were uninjured when their car was hit on the M25. Both incidents happened in June.
Police said the filmed cars were thought to be used by Luke Wall, 23, who is wanted over the theft of property worth £500,000.
Properties were burgled in Essex, Cambridgeshire, Suffolk, Hertfordshire, Kent and Norfolk.
The film, released by Essex Police, shows a Cambridgeshire motorcycle officer flagging down a car near Duxford on 9 June. Before he can get off his bike, the driver reverses into him, then makes off.
Pair on run
The incident was captured on a body camera worn by the officer.
He was injured, but able to get up and call for back-up. Members of the public can be seen stopping on the hard shoulder to assist him.
The officer was treated in hospital but is now back at work, Cambridgeshire Police said.
Three days later, a vehicle stopped by officers in Hertfordshire reversed into their car, forcing one officer to jump over a barrier to avoid being hit.
Essex Police said Mr Wall was wanted in connection with "a significant number of dwelling burglaries".
He is currently missing after breaching crown court bail conditions for burglary offences.
Mr Wall's last-known address was in Stanford-le-Hope, in Essex.
Police are also looking for his partner, Teresa Conners, 20, who breached her bail conditions for burglary offences in Kent.
Det Ch Insp Paul Maleary, of Essex Police, said: "We need to trace these two people urgently as they are suspected of continuing to commit burglary crimes after breaching court bail conditions.
"Extensive enquiries have been carried out across the UK but Wall and Connors appear to be always on the move. However, we believe they are currently somewhere in East Anglia.
"The Crown Prosecution Service have taken an unusual step and agreed that we can release some of the CCTV footage of police vehicles being rammed to show how important it is that we find those responsible as quickly as possible."