POLICE have warned of “serious disruption” to drivers using the M4 and M5 on Monday 4 July due to a planned protest.

Protesters intend to block the Prince of Wales Bridge from 7am until 7pm as part of a nationwide campaign against rising fuel prices.

The protest is due to start at the M4 Magor services at junction 23A eastbound and the Clevedon Interchange at junction 20 of the M5 westbound.

It is also expected to cause disruption to the M48 Severn Bridge and the M32.

Drivers are being urged to avoid the area or plan alternative routes.

Bristol Airport has issued a warning urging travellers to allow extra time if heading to or from the airport.

Police said additional officers will be brought in to ensure the protest is carried out legally.

Drivers have been advised by Gwent Police to work from home where possible and avoid the area between 7am and 7pm, with protestors planning to block parts of the road between M4 Magor services, junction 23A eastbound, and Junction 20 of the M4 between those hours.

Chief Superintendent Tom Harding said: “Gwent Police, and Avon and Somerset Police, are working jointly with neighbouring police forces and partner agencies to ensure emergency and critical services continue and to reduce disruption to both road users and local communities, however we are preparing for serious disruption throughout the day.

“I would encourage drivers to reconsider their journey, consider working from home and avoid the area where possible.

“The right to protest under UK law must be balanced with the rights of the wider community who may be affected. We have additional officers and support in place on Monday to ensure the protest is carried out in accordance with the law.”

The planned protest is thought to have been organised by the Facebook group Fuel Price Stand Against Tax, and has attracted both criticism and support online.

The latest travel disruption comes following the closure of the Severn Bridge for a second consecutive weekend, as well as the Severn Tunnel rain line which will be out of use until July 10 due to essential work. Motorists will be unable to cross the M48 Severn Bridge until 6am on Monday as it is undergoing essential work for eight months.

The bridge was first shut last weekend as painstaking work to repair and replace corroded suspension cables began. Traffic on the bridge is likely to be very heavy on Monday due to the fuel protest.

Police have told protesters banners must be tightly secured to vehicles and nobody should be walking around on the bridge during the demonstration. Protesters will stay inside their vehicles or stand beside them.

An organiser said: “We will now only be doing it on the Prince of Wales Bridge. We have to keep in mind everyone’s safety and if we block the bridge totally and there is an emergency there would be hell. Yes it means only one bridge but [due to the amount of traffic caused] there will still be a massive impact.”

Two weeks ago one of the initial M4 bridge protest organisers Ashley Fowler said : “We’re all car enthusiasts and we have all been worried about fuel prices and when I saw the post about blocking the bridges we began talking about it. Then people started asking me to make an event so we could update each other.

“I made the event because I run a car club in Cardiff which I started on social media during the pandemic lockdowns to help people’s mental health. When we can we go out to car parks and just meet up and have a chat but during the pandemic we weren’t able to do it so I made the group.

“Now we can’t meet up so much again because of the cost of fuel. I know some of them can’t drive so much because they need to feed their kids. It’s serious. People are getting really depressed about it. One of the boys in the group has actually sold his car due to fuel price rises.”