Operation Lockstream: 70 offences dealt with on the M4 in Wiltshire

The results of Operation Lockstream were reported by Wiltshire 999s on Tuesday 30 June 2026. Wiltshire Police's Roads Policing Unit spent two days stopping vehicles on Wiltshire's section of the M4, the stretch that serves Swindon. The report did not give the dates of the operation.

The unit said: "A successful two days of Operation LOCKSTREAM, focusing on driving offences along Wiltshire's section of the M4." It added: "Officers engaged with drivers and took action where needed".

Arrests

Five people were arrested: one on suspicion of handling stolen goods, two for immigration offences, one for theft and one for disqualified driving. Nobody was named.

Vehicle and driver offences

• 24 immediate defect notices and one delayed mechanical defect notice
• 21 fixed penalty notices for overweight vehicles, plus two graduated fixed penalties for foreign overweight vehicles
• Four traffic offence reports for no insurance and one for a vehicle in a dangerous condition
• Three drivers' hours offences, with fines totalling £300
• Three people reported for driving otherwise than in accordance with a licence
• Single fixed penalties for no seatbelt, no MOT and a tachograph offence

Vehicles taken off the road

One vehicle was prohibited from continuing because of its condition, one was seized on suspicion of being stolen and one was seized for having no road tax.

Swindo's roadworks page lists planned closures on the M4 around junctions 15 and 16.

Source: Wiltshire 999s.

More from Swindo: Roadworks in Swindon.