As parts of the UK swelter, try these low-energy ways to cool down – from fly screens and no-cook meals to air coolers that use a fraction of the electricity of aircon

• The best cooling fans

Where I grew up, snow days were a foreign concept. Instead, children looked to the other end of the thermometer when hoping for a day off school. Playground rumour had it that when the temperature reached more than 40C, classes would be cancelled.

I finished primary school at the turn of the century, so never saw that theory tested. But as the climate crisis intensifies, throughout much of south-eastern Australia, we’ve come to expect at least one 40C day each summer. That means subsequent cohorts of Australian children are learning that temperature triggers for school closure were only ever an urban legend. Instead, in many schools, hot weather means staying indoors during break and lunch.

A testy Reform UK leader tried to bat off questions about why a gigantic gift to him had anything to do with the public

Happy days. Ten glorious years. Maybe it was the chance to bask in the unmitigated triumphs of the UK’s decision to leave the EU. Maybe he wanted to take advantage of a rare lacuna. The vacuum between the last rites of the Keir Starmer government and the handover to Andy Burnham. The man from Makerfield who had only a few days ago been in such a hurry now finds he needs more time to get his ducks in a row. Or maybe it was just the hope that amnesia had set in. That it was safe to come out. Whatever it was, Nigel Farage chose to break cover.

For more than eight weeks now the Reform leader has been a virtual recluse. From having to meet his cravings for an instant fix with two or three press conferences a week, Nige has refused to do any media. He has been in hiding. Only seen out with a few friendly faces. Posting videos of himself alone in a field where reporters can’t find him. Any suggestions that this has anything to do with the £5m gift, or whatever you want to call it, are obviously hopelessly wide of the mark. Nige just wants to be alone. To take a Garbo moment. Some me-time with the person he loves most in the world.

The cost of the traditional takeaway has doubled since 2019, and more outlets are trying to tempt customers with cheaper options such as coley, pollack and hake

In late April, visitors to Harbour Lights in Falmouth, Cornwall, may have raised an eyebrow. The fish and chip shop was in the midst of a “cod-free week”, its owners having removed cod from its menu entirely.

It was the second time owner Pete Fraser had undertaken the experiment, 15 years after the first. He also removed cod from his shops in Penzance and Helston, replacing it with coley, pollack, hake and hoki. The result was very different. “Some of the feedback we had, which certainly wasn’t what we got when we ran it years ago, is ‘Can you repeat this?’ Before, it was like, ‘Have you guys lost your head’?”

From a mural in a baby’s bedroom to a sound sculpture designed to be played out of a convertible, top contemporary artists rose to the challenge of making work for one lucky community

In 1986, an exhibition called Chambres d’Amis took contemporary art beyond the confines of the museum setting and into the homes of 58 residents in Ghent. Forty years on, a similar experiment is taking place, but on a small street in Peckham, south-east London.

Rooms of Neighbours is the brainchild of curator Ben Broome, who came across Chambres d’Amis when he was between institutional jobs. With time on his hands and an urge to get to know his neighbours better, he began to wonder how he could apply the idea to his own community, but with a broader focus. Unlike the exhibition in Ghent, which mostly took place in the homes of art world friends and museum patrons, his own street – a mix of council and privately owned flats and houses – represented a wider demographic, with different age groups, social classes and diasporas. Few of the residents had any prior connection to the art world, he tells me: “The majority of people have never been to the Tate; they have never even been to the South London Gallery, which is a local institution. But that’s not to say some of the neighbours aren’t really creative.”

Whether you fire up the outdoor projector or Netflix and chill in a cool, dark place – let the escapism of cinema be a balm amid the punishingly hot weather

As you will no doubt have noticed, it is quite warm out. Historically warm, in fact. By the end of the week it is likely that the UK will have seen its warmest June day since records began. The Met Office has issued a red warning, recommending that people stay out of the sun entirely. Which sounds an awful lot like code for “stay inside and watch films.”

But which films? It seems only right to watch something that reflects this apocalyptic weather somehow. Here are some suggestions:

Who put Theresa May’s back up on Instagram, what did Boris Johnson say about bananas and much more

It is 10 years since the British public decided to pack up its troubles in its old kit bag, give Jacques Delors the final up yours and march off into an EU-free paradise. Opinions may differ on how that has worked out. Certainly several of the architects of the whole thing are enjoying lovely well-paid retirements on the speaking circuit or have seats in the House of Lords. Anyway, here are 18 questions about Brexit and the referendum campaign. How much do you remember about some of the weirder aspects of those few weeks, months and then years as the UK negotiated its exit?

The Guardian 10th anniversary Brexit referendum quiz

Temperature on Tuesday hits high of 34.6C in Surrey, England, with heatwave forecast to get more intense on Wednesday and Thursday

• Europe heatwave live – latest updates

Searing heat has swept the UK with schools, hospitals, transport networks and water companies struggling to cope with the extreme temperatures caused by climate breakdown.

Temperatures hit highs of 34.6C in Wisley in Surrey, the Met Office said, with the UN chief warning that London was “cooking”.

Reduced rail speeds and services.

Hospital patient appointments cancelled.

School closures across southern England and Wales.

Hosepipe bans in south-east England.

Exclusive: Jim O’Neill, a former chief economist at Goldman Sachs, says government should spend more on big projects

• UK politics live – latest updates

The man tapped by Andy Burnham to be his chief economic adviser has called for billions of pounds more borrowing to pay for investment in infrastructure, in a sign of how Burnham may seek to break from the policies pursued by Keir Starmer.

Jim O’Neill, an economist and former minister, said he wanted the government to create an independent body for infrastructure spending along the lines of the Office for Budget Responsibility (OBR), which could be freed up to spend significantly more on major projects.

Treasury also promises a new first-time buyer Isa with no upper age limit, as the ‘age at which a first home is bought is rising’

Isa reforms announced on Tuesday promise a new first-time buyer account with no upper age limit, and a tax on interest on cash savings held in a stocks and shares wrapper.

Savers and investors can currently hold up to £20,000 a year in Isas, which offer the chance to earn returns which are not subject to tax.

Kemi Badenoch, who joined US anti-abortion activists and European far-right parties at ARC, described energy secretary as a ‘villain’

Britain’s net zero policies and the energy secretary, Ed Miliband, have come under fire at a conference of conservatives, rightwing populists and wealthy US backers linked to Donald Trump.

The energy policies pursued by the British government were described as a “tragic mistake” by Trump’s energy secretary, one of a number of officials from the US administration attending the event.