In a plot twist nobody saw coming (because they were too busy looking at the sun), a bakery in central London has become the unlikely epicenter of eclipse glasses mania, with one staff member reporting they've sold 'like, 100 this morning.' Forget the sourdough - the real hot commodity is cardboard and plastic spectacles, as Brits scramble to safely witness Wednesday's solar eclipse, the UK's most significant since 1999.

Experts have been yelling from the rooftops (or at least issuing stern press releases) that staring at the sun is a terrible idea, with even brief exposure causing lasting damage. But finding certified glasses has become a quest worthy of a fantasy novel. Online, pairs meeting safety specs have all but vanished, leaving only options that require a 'hefty next-day delivery fee' or simply won't arrive in time. Even the Royal Museums Greenwich - the UK health officials' recommended retailer - has sold out, citing an 'unprecedented volume' of orders.

As demand skyrockets, glasses are popping up in the most unexpected places. One customer, who'd Googled 'where can I get eclipse glasses but not through the post' after realizing they were too late, found themselves queueing at a bakery on Monday. Meanwhile, a WhatsApp channel advertising stock in corner shops has attracted thousands of followers in days, and Reddit and Facebook threads are directing hopeful buyers to online marketplaces, including bulk purchases.

Lily, 27, took to Instagram 'like everyone else did' after her eBay order failed to materialize, only to be met with replies saying, 'if you find out where to get some, let me know.' Her best hope was a newsagent rumored to be selling stock late Tuesday, but with hundreds expected to show up, she 'accepted defeat.' Fortunately, a friend scored a pair at the last minute in what she called a 'miracle.'

With about 90% of the sun set to be obscured by the moon, the stakes are high. The UK Health Security Agency (UKHSA) advises looking for the international safety standard ISO 12312-2 printed on the glasses, ensuring lenses aren't scratched or damaged, and buying new rather than dusting off 1999's pair. They also warn against counterfeit and substandard products, a concern echoed by UKEclipse, an initiative by UK astronomers.

The American Astronomical Society (AAS) suggests checking its list of lab-tested manufacturers and offers a three-part test: indoors, outdoors, and a quick glance at the sun. If you see anything other than a 'sharp-edged, round disk... comfortably bright, with a dark background,' your glasses are probably garbage. And remember, the Royal College of Ophthalmologists warns that even a small gap in protection can harm your eyes, as the retina has no pain receptors - so you won't feel the damage as it happens. They reported about 70 cases of vision problems after the 1999 eclipse, with 40% of those affected having looked for less than a minute.

If you can't find certified glasses, do not - repeat, DO NOT - use regular sunglasses. Imo Bell, a planetarium astronomer at The Royal Observatory Greenwich, explains that specialist glasses block out so much light you can't see anything else, while regular sunglasses reduce glare and make you look longer, causing more damage. Instead, embrace the pinhole projector method - a simple card, a cardboard box, or even a colander can project the eclipse safely.

As Bell puts it, 'We're not going to get one this good for a really long time. So, it's important not to miss it, and to be prepared.' And if all else fails, there's always the livestream - no glasses required, and your retinas will thank you.