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).

It’s a threat that will send a shiver down the spine of Downing Street and shake the City of London to its core.

Even the notion that AstraZeneca (AZ) – the UK’s most valuable listed company – is thinking of upping sticks and switching its stock market listing to America is a frightening prospect on many levels.

After all, if your biggest firm departs for Wall Street, what message does it send to an already bruised London stock market that has struggled to find its way since the UK’s vote to leave the European Union?

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The timing of the report in The Times that Pascal Soriot, the pharmaceutical company’s long-standing chief executive, is considering his own Brexit for the company, will not be lost on anyone.

The Treasury is under severe strain and the Starmer government, apparently focused on compromise given its welfare reform U-turns, bruised.

Ministers have been scrambling to get the support of business back, after a budget tax raid that has added to the cost of employing people in the UK, by launching a series of strategies to demonstrate a growth-led focus.

Mr Soriot’s reported shift is the culmination of years of frustration over UK tax rates and support for business – though it could also remove a focus on his own remuneration as the highest-paid director of a UK-listed firm.

AZ has its own gripes with Labour.

In January, the company cancelled a planned £450m investment in a vaccine factory on Merseyside, accusing the government of reneging on the previous Conservative administration’s offer of financial aid.

At the same time, it has been rebuilding its presence in the United States.

That speaks to not only a home market snub but also the election of a US president intent on protecting, as he sees it, America-based companies and jobs.

Donald Trump is threatening 25% tariffs on all pharma imports.

AZ has already promised a $3.5bn (£2.6bn) investment in US manufacturing by the end of 2026.

It has also rejoined the leading US drug lobby group, bolstering its voice in Washington DC.

There are sound reasons for bolstering its US footprint; more than 40% of AZ’s revenues are made in the world’s largest economy. Greater US production would also shield it from any duties imposed by Mr Trump and any MAGA successor.

Since Brexit, complaints among UK stock market constituents have been of low valuations compared to peers (with a weak pound also leaving them vulnerable to takeovers), weaker access to capital and poor appetite for new listings.

Wise, the money transfer firm, became the latest UK name to say that it intends to move its primary listing to the US just last month.

If followed through, it would tread in the footsteps of Flutter Entertainment and the building equipment suppler CRH – just two big names to have already left.

London was snubbed for a listing by its former chip-designing resident ARM back in 2023.

An initial public offering by Shein, the controversial fast fashion firm, had offered the prospect of the biggest flotation for the UK in many years but that was blocked by the Chinese authorities.

Efforts to bolster the City’s appeal, such as through the Financial Conduct Authority’s overhaul of listing rules and the creation of pension megafunds to aid access to capital, have also been boosted in recent months by investors in US companies taking a second look at comparatively low valuations in Europe.

Market analysts have charted a cash spread away from the US as a hedge against an erratic White House.

The Times report suggested that Mr Soriot’s plans were likely to face some opposition from members of the board, in addition to the UK government.

AstraZeneca has not commented on the story. Crucially, it did not deny it.

But a government spokesperson said: “Through our forthcoming Life Sciences Sector Plan, we are launching a 10-year mission to harness the life sciences sector to drive long-term economic growth and build a stronger, prevention-focused NHS.

“We have already started delivering on key actions, from investing up to £600m in the Health Data Research Service alongside Wellcome, through to committing over £650m in Genomics England and up to £354m in Our Future Health.

“This is clear evidence of our commitment and confidence in life sciences as a driver of both economic growth and better health outcomes.”

Governments don’t comment on stories such as these, but you can bet your bottom dollar that the departure of your biggest firm by market value is not the message a government laser-focused on growth can afford to allow.

A power outage that shut Heathrow Airport earlier this year, causing travel chaos for more than 270,000 passengers, was caused by a “catastrophic failure” of equipment in a nearby substation, according to a new report.

Experts say the fire at the North Hyde Substation, which supplies electricity to Heathrow, started following the failure of a high-voltage electrical insulator known as a bushing, before spreading.

The failure was “most likely” caused by moisture entering the equipment, according to the report.

National Grid, which owns the substation, missed two opportunities to prevent the failure, experts found, the first in 2018 when a higher-than-expected level of moisture was found in oil samples.

Such a reading meant “an imminent fault and that the bushing should be replaced”, according to guidance by the National Grid Electricity Transmission.

However, the report by National Energy System Operator (NESO) said the appropriate responses to such a serious issue were “not actioned”, including in 2022 when basic maintenance was postponed.

“The issue therefore went unaddressed,” the report added.

The design and configuration of the airport’s internal power network meant the loss of just one of its three supply points would “result in the loss of power to operationally critical systems, leading to a suspension of operations for a significant period”, the report added.

Heathrow – which is Europe’s biggest airport – closed for around 16 hours on 21 March following the fire, before reopening at about 6pm.

Around 1,300 flights were cancelled and more than 270,000 air passenger journeys were disrupted.

Tens of millions of pounds were lost, thousands of passengers were stranded, and questions were raised about the resilience of the UK’s infrastructure.

More than 71,000 domestic and commercial customers lost power as a result of the fire and the resulting power outage, the report said.

NESO chief executive, Fintan Slye, said there “wasn’t the control within their [National Grid’s] asset management systems that identified that this [elevated moisture levels] got missed.

“They identified a fault, [but] for some reason the transformer didn’t immediately get pulled out of service and get repaired.

“There was no control within the system that looked back and said ‘oh, hang on a second, you forgot to do this thing over here’.”

Sky’s science and technology editor, Tom Clarke, pointed to the age of the substation’s equipment, saying “some of these things are getting really very old now, coming to the end of their natural lives, and this is an illustration of what can happen if they are not really well maintained”.

The report also highlights a lack of joined-up thinking, he said, as “grid operators don’t know who’s critical national infrastructure on the network, and they don’t have priority”.

Responding to the report’s findings, a Heathrow spokesperson said: “A combination of outdated regulation, inadequate safety mechanisms, and National Grid’s failure to maintain its infrastructure led to this catastrophic power outage.

“We expect National Grid to be carefully considering what steps they can take to ensure this isn’t repeated.

“Our own Review, led by former Cabinet Minister Ruth Kelly, identified key areas for improvement and work is already underway to implement all 28 recommendations.”

In May, Ms Kelly’s investigation revealed that the airport’s chief executive couldn’t be contacted as the crisis unfolded because his phone was on silent.

Energy Secretary Ed Miliband, who commissioned the NESO report, called it “deeply concerning”, because “known risks were not addressed by the National Grid Electricity Transmission”.

Mr Miliband said energy regulator Ofgem, which opened an investigation on Wednesday after the report was published, is investigating “possible licence breaches relating to the development and maintenance of its electricity system at North Hyde.

“There are wider lessons to be learned from this incident. My department, working across government, will urgently consider the findings and recommendations set out by NESO and publish a response to the report in due course.”

National Grid said in a statement it has “a comprehensive asset inspection and maintenance programme in place” and said it has “taken further action since the fire”.

This includes “an end-to-end review” of its oil sampling process and results, further enhancement of fire risk assessments at all operational sites, and “re-testing the resilience of substations that serve strategic infrastructure”.

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A spokesperson said: “We fully support the recommendations in the report and are committed to working with NESO and others to implement them. We will also cooperate closely with Ofgem’s investigation.

“There are important lessons to be learnt about cross sector resilience and the need for increased coordination, and we look forward to working with government, regulators and industry partners to take these recommendations forward.”

The Metropolitan Police previously confirmed on 25 March that officers had “found no evidence to suggest that the incident was suspicious in nature”.