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The amount of time children in England spend on screens at school could be harming their “physical and developmental health”, a group of more than 150 clinicians has warned.

GPs, paediatricians and other specialists said in an open letter to Education Secretary Lucy Powell and Health Secretary Yvette Cooper that tablets and laptops are being used without a full understanding of their long-term health impacts, including on eye health.

The clinicians said they are prescribing glasses, hearing aids and speech therapy to children “for a problem that is unintentionally being made worse in our schools”.

The government said it was consulting on screen time guidance for children aged five to 18 but that technology could be a powerful learning tool if used properly.

The group of clinicians said nearly one million children are using screens in most lessons, despite studies suggesting a rise in short-sightedness.

They pointed to an analysis of 276 studies covering 5.4 million participants around the world.

That analysis, they claimed, found a rise in short-sightedness among children and adolescents from around 24% in 1990 to almost 36% by 2023, warning the condition is associated with an increased risk of a range of eye health problems.

Many children now spend longer on screens in the classroom than is recommended in a 24-hour period, the letter said, adding: “As a country, we need to wake up to this now, and start rolling back screen use in schools before the damage compounds further.”

One of its signatories was, Dr Becky Foljambe NHS GP and founder of Health Professionals for Safer Screens. She told BBC Radio 4’s Today programme parents had not been given the chance to “opt out” of the “excessive” use of screens in schools, which risks children “just not thriving” in education.

She said an “explosion” in short-sightedness “cannot be put down to genetics alone”.

Foljambe said it was a “lazy argument” to advocate for screen use to prepare children for a digital work, adding: “They also need their sleep, their eyesight, they need rest, they need ability to critically think and appraise.”

“We are conscious that some of this evidence is still surfacing but the direction of travel is consistent across multiple, independent, and in some cases very large, bodies of research,” the letter continued.

It also warned that children with special educational needs are “disproportionately” directed to screen-based learning.

A Department for Education spokesperson said the government was developing new screen-time guidance for children aged five to 18, and will consult on the safety of artificial intelligence and educational technology in schools.

They said: “Used well, technology can be a powerful tool to support learners who need it and free up teachers to deliver the excellent education every child deserves.”

It comes after a ban on smartphones in schools in England came into force in June, making individual schools and trusts legally responsible for being phone-free throughout the day.

Manchester City will claim as part of their appeal that key sponsorship deals were funded by the Abu Dhabi government, rather than the club’s owners.

Owners Abu Dhabi United Group (ADUG) – a private investment company belonging to United Arab Emirates vice-president and deputy prime minister Sheikh Mansour – are said to have topped up the value of commercial deals as part of a “disguised funding scheme” to the scale of £830.69m.

This, it was argued, enabled the club to appear to comply with Premier League and Uefa financial rules.

However, as first reported by the Daily Mail and Times, sources have told BBC Sport that City are expected to tell an appeal board that they have evidence showing the money directed to sponsors came from the Abu Dhabi government, rather than from ADUG.

Premier League rules allow state-owned bodies to sponsor clubs.

The independent commission detailed how City had “denied there had ever been any disguised funding scheme of the type alleged by the Premier League. Its case was that [it] had misunderstood how Abu Dhabi sponsorship agreements had been funded… The reality was [the club contested] that Abu Dhabi sponsors had always been liable for all recorded sponsorship fees and all had in fact been paid to the club by Abu Dhabi sponsors from their own funds/resources.

“No part of any recorded sponsorship fee had been paid by ADUG or from using ADUG funds. Abu Dhabi sponsors had from time to time applied for financial assistance from the Abu Dhabi government toward their liability to pay the recorded sponsorship fees – such applications had been granted…”

The independent commission rejected this submission as “untrue”, saying: “We concluded that it was an ‘explanation’ that the club had concocted well after the event in an attempt to obscure and conceal the realities of the disguised funding scheme.”

City’s argument is likely to lead to renewed debate over the extent to which City’s ownership is separate from the Abu Dhabi state, and over the ramifications of club ownership with state connections.

Mansour is a member of the ruling family of Abu Dhabi, and the brother of UAE President Sheikh Mohamed bin Zayed Al Nahyan.

Since the takeover in 2008, City have insisted the club is a completely private enterprise, and not state-owned. However, some critics have questioned the distinction, with human rights campaigners claiming the ownership of City has been used to “sportswash” the UAE.

On Saturday, City chairman Khaldoon Al Mubarak referred to “irrefutable evidence” that he claimed supports the club’s claims of innocence. City have claimed the commission’s decision contained “clear material errors, of law, principle and fact, and is unsafe”.

It has emerged that Al Mubarak, who was appointed chairman of City following the takeover in 2008, is named as an Emirati diplomat on the UK government’s current directory of all foreign representatives.

Representatives of foreign states and their diplomatic staff “enjoy privileges and immunities under the Diplomatic Privileges Act (1964)”, giving diplomats immunity from prosecution under criminal, civil and administrative laws.

City’s principal sponsor Etihad Airways has said it is considering legal action against the Premier League, claiming the release of the commission findings had “damaging implications… despite the airline not being named in the redacted published findings”.

The UAE’s state-owned national airline said it “categorically rejects any finding, conclusion or implication that suggests the airline has ever been involved in improper commercial arrangements”.

Etihad is owned by sovereign wealth fund L’Imad which is chaired by the Crown Prince of Abu Dhabi, the son of the UAE president.

The Premier League declined to comment when contacted by BBC Sport.

Additional reporting from James Landale, diplomatic correspondent for BBC News.

Brits going on holiday this autumn have been urged to check their luggage for an item that can no longer be used on planes – and it could mess up your travel plans

If you’re going on holiday this year, you need to make sure you follow a new travel rule that bans the use of one common item on planes. With summer behind us and the kids back at school, many Brits will be looking to book a holiday in the hopes that prices for flights and hotels have dropped.

Before leaving for your trip, it’s important to make sure you understand all the rules in place for everything from your flight to airport security, as you don’t want to get caught out with something that can ruin your holiday. One woman recently said her travel plans were almost scuppered by one little-known rule she didn’t know, as it only came into effect recently.

In a video on TikTok, a woman uploaded a video that captured the moment passengers on her Jet2 flight were told they could not use power banks while on the flight, due to a new rule.

Passengers were told: “As of the first of August, it is now illegal to use power banks on European aircraft, so if you’ve got a power bank with you, it should remain switched off, as these are forbidden for use on flights.”

The woman could be seen shaking her head and exchanging a confused look with her daughter, as she seemingly had no idea that the rule was in place. This was made even clearer with her video’s caption, where she admitted she had been hoping to use her power bank to charge her phone during the flight.

She wrote: “My phone’s about to die.”

It is not illegal to bring power banks on planes, but current aviation rules ban using them to charge devices or recharging the banks themselves during flights. This is because they carry a fire risk if the battery inside overheats, which can be dangerous to passengers on board – so it’s best to charge your device before you get on the plane.

Power banks must never be stored in your hold luggage, and should instead go in your hand luggage. This helps to reduce the risk of fire, as it can be quickly dealt with if something does go wrong and the battery does overheat.

Several commenters on the woman’s video said they agreed with the new rules for safety reasons, as they said they had heard horror stories of power banks catching fire on flights in the past.

One person said: “I can understand as they get really hot. Should really ensure this is known to people as it’s really important.”

Another added: “I brought a new power bank on a plane last year, and when I got off the plane, it had split the casing and was very hot.”

A third wrote: “About time!”

New rules, which came into force in March this year, aim to reduce the likelihood and impact of incidents involving power banks. The UK Civil Aviation Authority (CAA) is asking travellers to familiarise themselves with these rules, which are:

• Power banks must be carried in hand luggage only
• Each power bank must be individually protected when not in use, using a pouch, its original packaging or a separate bag to prevent short circuiting
• You can take a maximum of two power banks per person
• Power banks must not be recharged on board, including from an in-seat power outlet
• Power banks up to 100Wh are permitted, while those between 100Wh and up to 160Wh need approval from the airline

Whether you can use your power bank to charge your phone on an aircraft actually depends on the airline. While you cannot charge the power bank itself on any flight, some airlines may allow it to be used as a portable charger.

Ryanair allows them to be used, except during taxi, take-off, and landing, while easyJet, Jet2, Emirates, and Virgin Atlantic do not allow power banks to be used on board at all.

Vaibhav Sooryavanshi told to be patient after playing back up to Abhishek Sharma and Sanju Samson in Sri Lanka series.

India coach ‌Gautam Gambhir said Vaibhav Sooryavanshi will have to ⁠wait for his ⁠chance to break into the side after he left the 15-year-old prodigy on the sidelines of ⁠their three-match Twenty20 series sweep against Afghanistan.

Abhishek Sharma and Sanju Samson opened for India in the series, with ⁠Abhishek scoring the third-fastest century in T20 internationals in Thursday’s 127-run victory in New Delhi.

Sooryavanshi, who was the highest scorer in this year’s Indian Premier League, made his international debut against ‌England in July, but the top-order batter failed to make an impact as the hosts dominated India in the T20 series.

He scored two fifties against Zimbabwe in Harare later that month but has not played for India since.

“Whether you’re a 15-year-old or a 30-year-old, when ⁠you have to wait for your ⁠opportunity, you have to wait for your opportunity,” Gambhir told reporters after the match.

“We know the kind of talent he has and what he ⁠can do, but someone who has been performing for the last two to three ⁠years will always be ahead of ⁠someone who has just entered the team.”

Sooryavanshi will travel to Nagoya for India’s Asian Games campaign, with a one-off T20 against hosts Japan set ‌for Tuesday before the Asiad quarterfinal on September 28.

“Whenever he gets his run, he will get a longer run ‌as ‌well … We want competition and talent in the dressing room,” Gambhir added.