Spring Bank Holiday Getaway: 15-Mile Tailbacks Hit M25 and M6 Today

Millions of UK motorists are facing severe delays today, Thursday, May 21, as the Spring Bank Holiday getaway begins in earnest. National Highways and the RAC have issued urgent alerts for congestion starting from 11:00 AM, with tailbacks expected to reach 15 miles on key arterial routes. Travel experts warn that journey times on the M25 and M6 could increase by up to 90 minutes as the first wave of holidaymakers heads toward coastal resorts and major airports.

The Essentials

• Peak Congestion: Expected to start from 11:00 AM today, peaking between 2:00 PM and 6:00 PM.
• Major Bottlenecks: M25 clockwise near the Dartford Crossing and the M6 Northbound through the West Midlands.
• Volume: An estimated 18 million leisure trips are planned across the long weekend.
• Critical Window: Drivers are advised to complete their journeys before 2:00 PM to avoid the merge of holiday and school-run traffic.

Severe Congestion Forecast for M25 and M6 Bottlenecks

The most significant disruption is anticipated on the M25 clockwise, particularly approaching the Dartford Crossing. National Highways data suggests that tailbacks here could exceed 15 miles, adding significant time to journeys for those travelling from Kent into Essex and beyond. Similarly, the M6 Northbound through the West Midlands is identified as a primary hotspot, with heavy traffic likely to stall progress for families heading toward the Lake District or the North West.

Data from the RAC indicates that Thursday afternoon serves as the unofficial start of the ‘Frantic Friday’ period, where commuters, holidaymakers, and commercial vehicles all compete for limited road space. The sheer volume of traffic is expected to result in stop-start conditions on the M1, M4, and M5 as well, though the M25 and M6 remain the areas of highest concern for today.

The 2:00 PM Traffic Surge and the School Run Factor

A critical turning point for today’s traffic flow occurs at approximately 2:00 PM. This is the moment when the early holiday getaway traffic typically merges with the local school-run and afternoon commuter peak. This “double-peak” effect creates a surge in vehicle density that the UK motorway network often struggles to absorb.

Motorists who have not reached their destination by early afternoon are likely to find themselves caught in the most stagnant periods of the day. The RAC suggests that for those who cannot leave before midday, it may be more efficient to delay departure until after 7:00 PM, when the initial rush begins to subside.

National Highways Response and Roadwork Suspensions

To help alleviate the pressure, National Highways has confirmed that it will suspend major roadworks on primary routes where possible. Over 500 miles of roadworks are expected to be removed or completed ahead of the bank holiday weekend to maximize lane capacity. However, officials warn that even with all lanes open, the sheer volume of 18 million leisure trips will inevitably lead to localized gridlock.

Drivers are urged to carry out basic vehicle checks—specifically oil, coolant, and tyre pressure—before setting off. Breakdowns are a leading cause of secondary congestion during bank holiday periods, often turning a heavy traffic situation into a complete standstill.

Preparing for ‘Frantic Friday’

While today marks the beginning of the rush, Friday is expected to be the busiest day for travel overall. Those aiming to avoid the worst of the bank holiday traffic should monitor live traffic feeds and consider alternative routes that bypass the M25 and M6 corridors if possible. Public transport remains an alternative, though travelers should check for any planned engineering works on the rail network that often coincide with bank holiday weekends.

Source: RAC