The heatwave gripping Europe has crossed the Channel. France has declared its highest 'red' weather alert. This isn't just about sunburn. It is about the death of rail lines and the clogging of ports. Whitehall is now in emergency mode.
Sources close to the Department for Transport confirm contingency plans are being pulled from dusty cabinets. The fear is simple. Extreme heat buckles tracks. It melts tarmac. It grounds flights. The ports of Calais and Dunkirk are in the direct line of fire.
One transport source put it bluntly: "We have seen this before. The summer of 2019 was a dress rehearsal. This is the full production."
The stakes are brutally high. Dover handles 10,000 lorries a day in peak season. Add Eurotunnel and ferries. Any slowdown means a traffic nightmare for Kent. The M20 becomes a lorry park. Operation Brock, the hated contraflow system, might be reactivated.
There is a political dimension too. The Home Office is wary. A chaotic border invites small boat crossings. Or the perception of chaos. Both are toxic for a government trying to own the migration narrative.
Downing Street is monitoring. The Prime Minister's official spokesman refused to be drawn on specifics. But the mood is grim. One Number 10 aide said: "We are in touch with French authorities. We are prepared for all scenarios."
Prepared is a strong word. The UK’s own infrastructure is creaking. Network Rail has already imposed speed restrictions. London North Eastern Railway has warned of cancellations. The heat is a rude reminder of the country's vulnerability.
The French alert covers a swathe of the country from Paris to the coast. It is a breadbasket for British holidaymakers. It is a corridor for freight. The worry is systemic failure.
A former transport minister, speaking on condition of anonymity, was scathing: "We knew this was coming. Climate change means more of these events. But do we have a dedicated heatwave resilience plan? No. We scramble."
Scrambling is the right word. The Cobra emergencies committee has not met. Not yet. But the clock is ticking. Temperatures in parts of France could hit 40C again on Monday. The red alert runs through to Tuesday.
What happens if the trains stop? P&O Ferries and DFDS are ramping up capacity. But they can only do so much. The Channel is a bottleneck. A bottleneck with a temperature alarm.
The Treasury is watching the cost. Every cancelled train, every delayed lorry, every spoiled shipment hits the bottom line. The Bank of England will factor this into inflation forecasts. It adds to the headache.
And then there is the human cost. Elderly Britons on holiday. Children. The vulnerable. The Foreign Office has updated its travel advice. It urges caution. But caution doesn't stop a heat stroke in a traffic jam.
The scandal is this isn't new. The 2019 heatwave saw Eurostar services cancelled. Roads melted. The UK had its own record temperatures. Yet planning remains reactive. A Whitehall insider told me: "We have lessons learned exercises. But the lessons gather dust. We don't implement."
Implementation is now urgent. The French alert is a wake-up call. But this government has other priorities. The leadership contest. The cost of living. The heatwave is a distraction they didn't need.
For now, the advice is simple. Check before you travel. Carry water. Have backup plans. But for those in Whitehall, the real work is prevention. And that is something they have consistently failed to do.
Tomorrow, the heat peaks. The Channel will be tested. So will the government's ability to manage a crisis that is entirely predictable. The last time this happened, the system worked...just. This time, the margin for error is thinner.
Watch this space.