Twenty vehicles were stopped by Thames Valley Police during an Automatic Number Plate Recognition operation.
Of the 20 stopped, a total of four vehicles were seized as the drivers could not prove they were insured to drive the vehicles.
Five fixed penalty notices were also issued during the operation on Monday in Colnbrook and Horton. No arrests were made.
Det Supt Chris Ward giving briefing to media about M4 murder investigation. Did you see anything on Fri? Call 101 http://t.co/7K7eDZKrk3
Thames Valley Police have launched a murder investigation after the unexplained death of a man on the M4 in Berkshire.
Officers were called to the eastbound carriageway between junctions 10 for Reading and 8/9 for Windsor, after a driver reported hitting someone at around 10 o'clock on Friday night. The man, who was in his forties, was declared dead at the scene by paramedics.
Officers are trying to find out the exact circumstances behind the man's death. A post mortem examination is due to take place this afternoon.
"We have been investigating the death of a man in his forties on the M4 on Friday night and working to establish the exact circumstances behind the death.
"It is as a result of this work that we are now treating this death as a murder investigation.
"I therefore ask that if anyone was travelling along this stretch of motorway on Friday night and saw anything which could help our investigation to get in touch immediately. Did you see anything unusual?"
Anyone with information is asked to contact the Thames Valley Police Enquiry Centre on 101, quoting URN 1707 24/10.
Alternately you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
Thames Valley Police is continuing to appeal for witnesses after an assault occasioning Grievous Bodily Harm in Banbury.
An image of the victim's injuries is being released in a renewed appeal for witnesses to come forward.
At around 12.30am on Tuesday 8 August, the victim, a 48-year-old man, was walking along the footpath leading from West Bar Street to People's Park with two female friends.
As they walked along the footpath they noticed a man and a woman walking behind them.
Suddenly, the man behind them jumped on the victim, knocked him to the ground and punched him repeatedly before running off into People's Park.
During the incident, the woman who was with the offender shouted "Michael" at him before running back towards West Bar Street.
As the victim's friends went to help him, a third man ran past them into People's Park shouting 'Mikey".
The victim sustained a number of serious lacerations to his face and was taken to the John Radcliffe Hospital for treatment.
An 18-year-old woman has been raped in Reading during the early hours.
Thames Valley Police were called at 12.40am, near an NCP car park by Icon House in Merchants Place. The victim had earlier left Milk Bar, and was walking towards the car park when she was attacked.
DCI Linda York said: 'At this time we are carrying out a full and thorough investigation into this incident, which includes reviewing CCTV in and around the area where the offence was reported to occur, to gather as much forensic evidence as possible.'
Anyone with information is asked to contact Thames Valley Police via the 24-hour Police Enquiry Centre on 101. If you don't want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at crimestoppers-uk.org.
A World War II mortar shell has been detonated in a controlled explosion in Windsor.
The mortar was discovered in the River Thames and was disposed of yesterday near the Victoria Bridge by King Edward the Seventh Avenue by the Royal Navy Bomb disposal team and members of Thames Valley Police Specialist Search and Recovery Team.
Roads and part of the River Thames were cordoned off and closed temporarily during the operation yesterday lunchtime
PC Rupert Jones of Thames Valley Police said: 'This was a successful operation and we are very pleased with the outcome which caused minimal disruption to the public.'
The way Thames Valley Police handled the death of a woman in Aylesbury, Buckinghamshire is to be investigated by the Independent Police Complaints Commission.
A 44-year-old woman died at a house in Aylesbury in the early hours of Saturday morning. Her death is being treated as unexplained but not suspicious. No more details have been released regarding her death.
The IPCC investigation into the fatal road traffic collision, involving a Thames Valley Police car and Aston McLean, is appealing for help to trace potential witnesses.
At around 1.45am on Wednesday 6 August, a marked Thames Valley Police car was involved in a collision with Aston on Wokingham Road. Aston, 28, died at the scene. He was also known as Aston Williams.
Through their enquiries IPCC investigators have recovered CCTV from a number of locations near the scene. This has been reviewed and has identified two men walking along Wokingham Road, near the junction with Eastern Avenue, who may have witnessed the incident.
The first man is described a wearing light denim jeans, carrying a rucksack and wearing either a jacket with a dark body and light coloured sleeves or a body warmer.
The second man is wearing jeans, a light coloured top, a dark baseball cap and is on the phone.
Thames Valley Police is appealing for witnesses after a pedestrian was in collision with a car in Banbury.
A 50-year-old man was crossing the road at the junction of Newland Road and Dashwood Road on the afternoon of 16th August when the accident happened. He suffered injuries to his knee, ankle and hip. The car didn't stop.
Police said they would like to hear from anyone who saw what happened. They've arrested a 27-year-old man from Banbury on suspicion of common assault, failing to stop at a road traffic collision, causing bodily harm by wanton/furious driving, driving a motor vehicle in a manner likely to cause danger to passengers and resisting arrest. He was released on bail until 25 September.
Detective Superintendent Chris Ward, from Thames Valley Police, responded to the verdict, after Jayden Parkinson's ex-boyfriend Ben Blakeley was found guilty of her murder.