Ryanair and easyJet have cancelled hundreds of flights as a French air traffic controllers strike looms.

Ryanair, Europe’s largest airline by passenger numbers, said it had axed 170 services amid a plea by French authorities for airlines to reduce flights at Paris airports by 40% on Friday.

EasyJet said it was cancelling 274 flights during the action, which is due to begin later as part of a row over staffing numbers and ageing equipment.

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The owner of British Airways, IAG, said it was planning to use larger aircraft to minimise disruption for its own passengers.

The industrial action is set to affect all flights using French airspace, leading to wider cancellations and delays across Europe and the wider world.

Ryanair said its cancellations, covering both days, would hit services to and from France, and also flights over the country to destinations such as the UK, Greece, Spain and Ireland.

Group chief executive Michael O’Leary has campaigned for a European Union-led shake-up of air traffic control services in a bid to prevent such disruptive strikes, which have proved common in recent years.

He described the latest action as “recreational”.

“Once again, European families are held to ransom by French air traffic controllers going on strike,” he said.

“It is not acceptable that overflights over French airspace en route to their destination are being cancelled/delayed as a result of yet another French ATC strike.

“It makes no sense and is abundantly unfair on EU passengers and families going on holidays.”

Ryanair is demanding the EU ensure that air traffic services are fully staffed for the first wave of daily departures, as well as to protect overflights during national strikes.

“These two splendid reforms would eliminate 90% of all ATC delays and cancellations, and protect EU passengers from these repeated and avoidable ATC disruptions due to yet another French ATC strike,” Mr O’Leary added.

The pound fell and state borrowing costs rose during a period of uncertainty over the chancellor’s future on Wednesday.

During Prime Minister’s Questions, Sir Keir Starmer declined to guarantee whether a visibly emotional Rachel Reeves would remain chancellor until the next election following the government’s welfare bill U-turn.

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Following his remarks, the value of the pound dropped and government borrowing costs rose, via the interest rate on both 10 and 30-year bonds.

Although market fluctuations are common, there was a reaction following Sir Keir’s comments in the Commons – signalling concern among investors of potential changes within the Treasury.

Sterling dropped to a week-long low, hitting $1.35 for the first time since 24 June. The level, however, is still significantly higher than the vast majority of the past year, having come off the near four-year peak reached yesterday.

While a drop against the euro, took the pound to €1.15, a rate not seen since mid-April in the aftermath of President Donald Trump’s tariff announcements.

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Meanwhile, the interest rate investors charge to lend money to the government, called the gilt yield, rose on both long-term (30-year) and ten-year bonds.

The UK’s benchmark 10-year gilt yield – so-called for the gilt edges that historically lined the paper they were printed on – rose to 4.67%, a high last recorded on 9 June.

And 30-year gilt yields hit 5.45%, a level not seen since 29 May.

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Both eased back in the hours following – as a spokesperson for the prime minister attempted to quell speculation about the chancellor’s future.

Sky News understands the prime minister made clear to the chancellor that she has his “complete support” and remains integral to his project.

Ms Reeves has committed to self-imposed rules to reduce debt and balance the budget. Speculation around her future led investors to question the government’s commitment to balancing the books – and how they would do that.

The questions over her future came after the government scrapped the core money-saving component of its welfare bill, which had been intended to reduce spending in order to meet fiscal rules.

Tesla’s woes have deepened as latest production and deliveries figures showed a greater fall than expected.

A total of 384,122 Teslas were delivered from April to June this year, a 13.5% drop on the same period last year and the second quarter of slumping output.

Wall Street analysts had expected Tesla to report about 1,000 more deliveries.

It’s bad news for Tesla chief executive Elon Musk in a week of attacks from President Donald Trump on him personally, as well as his companies.

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Mr Musk found himself on the wrong side of Mr Trump and the majority of US congresspeople in his opposition to the so-called big beautiful bill approved by the US Senate.

His criticism of the inevitable debt rises the bill will result in led Mr Trump threatening to end subsidies for Mr Musk’s numerous businesses and to deport him.

His role as founder and chief executive of numerous businesses has made him the world’s richest man, according to Forbes.

As well as Tesla, Mr Musk founded space technology company SpaceX and Starlink. He also acquired the social media company Twitter, which he rebranded X.

It was the poor performance of Tesla that pushed him out of full-time politics and back to the Tesla offices.

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After months of share price tumbles and protests at Tesla showrooms, sales drops and car defacings, Musk left his work with the Trump administration’s Department of Government Efficiency (DOGE).

Not everyone viewed the figures as negative.

Analysts at financial services firm Wedbush said: “Tesla’s future is in many ways the brightest it’s ever been in our view given autonomous, FSD [full self-driving], robotics, and many other technology innovations now on the horizon with 90% of the valuation being driven by autonomous and robotics over the coming years but Musk needs to focus on driving Tesla and not putting his political views first.”

After a 5% share price fall earlier this week when Mr Musk strayed back into political matters, Tesla stock rose 4.5% on Wednesday.

The latest financial details for Tesla will be published later this month.

In the first three months of the year, Tesla’s profits fell by 71% to $409m (£306.77m) from $1.39bn (£1.04bn). Revenues were also well below forecasts, dropping 9% to $19.3bn (£14.5bn).