

Sliced Bread
BBC Radio 4
While Sliced Bread takes a break we serve up Toast. A study of the spectacular failures of brands which had promised so much to consumers. In each episode, the presenter and BBC business journalist Sean Farrington examines one big idea. What did it promise? Why did people back it? Why did they get burnt? Some of the world’s most successful businesses have also brought us some of the world’s most remarkable failures. So, what led them to be toast? And what can we learn from their stories today? Sean unpicks all the early optimism, hype and ambition. He learns about the tremendous success of a brand before hearing how it faltered, with help from expert commentators and people who were directly involved. How do they view things now and what, if anything, could have been done differently? The self-made millionaire and serial entrepreneur, Sam White, is alongside him, analysing the missteps that changed a brand’s fortunes and reaching her own, often instructive, conclusions. From big tech to high street retail and, of course, food, Toast tackles the business ideas that, one way or another, ended up cooked. Sliced Bread returns for a new batch of investigations in January, 2026. In the new series, Greg Foot will investigate more of the latest so-called wonder products to find out whether they really are the best thing since sliced bread. In the meantime, Toast is available in the Sliced Bread feed on BBC Sounds. For this brand new series of Toast, episodes will be released weekly on Thursdays wherever you get your podcasts. But if you’re in the UK, you can listen to the latest episode on BBC Sounds first, a week earlier than anywhere else.Toast is a BBC Audio North production for BBC Radio 4.
Episodes
Mentioned books

Jan 19, 2023 • 27min
Energy Drinks
Sales of energy drinks are rising and their brightly coloured cans line the shelves of almost every supermarket or grocery store in the UK. But do brands like Monster, Red Bull and Relentless deliver on their promises? Listener Syed is a consultant radiologist and says he needs to be on his A-Game in his demanding job. He wants to know if an energy drink would be any better than his usual cup of coffee in helping him stay alert. He's also keen to know more about some of the ingredients they contain - things like taurine, guarana and electrolytes. What exactly do they do? And are energy drinks safe to drink regularly?Presenter Greg Foot has a thirst for knowledge and speaks to expert dieticians and cardiologists to find out if energy drinks live up to the hype. Are they the best thing since sliced bread - or marketing BS?PRESENTER: Greg Foot
PRODUCER: Simon Hoban

Jan 12, 2023 • 26min
Shampoo
Shampoo ranges hugely in price, from own brand bottles to premium products that promise to improve your hair, leaving it in better condition, stronger and shinier. But can they really deliver?Listener Sophie sent in a WhatsApp to ask just that, as well as whether we should use different shampoos depending on our hair type, if sulphates or parabens could be harmful to our hair, and if shampoo bars can do the job just as well, and be a greener option? Greg Foot untangles some of the most common claims by speaking with a clinical Trichologist (someone who has studied the structure, function and diseases of human hair) as well as an expert chemist and pharmaceutical analyst. This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Kate Holdsworth

9 snips
Jan 5, 2023 • 23min
Cold Defence Nasal Sprays
Two products dominate the market for nasal sprays that claim to reduce symptons of a cold - Vicks ‘First Defence’ and Boots ‘Dual Defence’. But do they work?Listener Leah got in touch because she catches lots of colds from her young son and wants to know if they can help her get over them more quickly. She also wants to know if they’re safe to use regularly and how long you should take them for.Presenter Greg Foot sniffs out the evidence and talks to a leading expert who’s dedicated most of his career to investigating cold remedies. This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Simon Hoban

Dec 15, 2022 • 27min
Batteries
In the run up to Christmas, many parents will be checking on their battery supplies ahead of Santa bringing gifts that require them. But do branded batteries, that promise more power and longer life at a higher price point, really deliver it?Listener Peter got in touch asking just that, as well as whether batteries have an expiry date? Greg Foot recruits some year 7 pupils and their teacher to help him perform a test to find out, and speaks to one of the country’s leading scientists about what gives a battery more power, or helps it store more energy. You can also hear more about the difference between single use, and rechargeable batteries in our longer podcast episode on BBC Sounds. This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Kate Holdsworth

Dec 8, 2022 • 29min
Perfume
Smelling good can come with a hefty price tag with the price of perfumes often getting into the hundreds of pounds. But what if there was a cheaper alternative?Listener Callum got in touch because his bottle of expensive perfume is about to run out. Presenter Greg Foot turns his nose to the task, testing so-called 'clone' perfumes which claim to get as close the originals as to be indistinguishable - but for a fraction of the cost. Speaking to an expert perfumer he finds out exactly how the clone houses copy the ingredients of designer perfumes and whether they last as long.Do they pass the sniff test? Are they the best thing since sliced bread or just marketing BS?This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Simon Hoban

Dec 1, 2022 • 29min
Razors
Dive into the world of razors as experts dissect whether more blades and fancy features really enhance your shave. Discover insights into hair types and the effective techniques for a smooth finish. Unravel the myths behind blade choices—are premium options worth it? Explore sustainability in shaving with a look at refillable versus disposable razors. Plus, uncover how different razors perform while considering both skin health and environmental impact. It's a fun quest for the ultimate shave!

Nov 24, 2022 • 29min
Collagen Supplements
It’s one of the most talked-about cosmetic products but what’s the evidence that collagen supplements really do slow the visible signs of the ageing process? Listener Jo got in touch wanting to know if the collagen supplement she’s spending £53 per month on will live up to its claim of reducing wrinkles, while promoting “glossy hair and plump dewy skin.”Other listeners asked whether it can help with joint aches and pains, or strengthen nails?Greg Foot sets out to answer all these questions by speaking to a leading consultant dermatologist as well as the co-founders of two of the biggest companies selling collagen supplements, Absolute Collagen and Ingenious Beauty. This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Simon Hoban

7 snips
Nov 17, 2022 • 33min
Wake Up Lights & SAD Lamps
With shorter days, longer nights, and bad weather leading to the winter blues for many, and for some the more severe Seasonal Affective Disorder, Sliced Bread investigates whether specially designed lights can really help improve how we feel.Listener Ross got in touch on WhatsApp after he’d read claims Wake Up Lights and SAD Lamps can boost our mood, and wanted to know what “medically certified” means when accredited to them, and if it’s worth paying extra for it? Greg Foot finds out by speaking to a leading expert in light therapy, as well as by visiting a manufacturer of these lights, to ask them to explain their claims, and whether they’re medically recognised in the UK. This series, we’re testing and investigating your suggested wonder products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Kate Holdsworth

Nov 10, 2022 • 29min
Portable Heaters
It's getting colder and with the cost of living rising, how best to heat our homes in the most efficient way possible has become a big question.Listener Ken got in touch about a new kind of portable ceramic heater he's seen advertised, promising to heat your room using 30% less energy.Greg Foot teams up with Octopus Energy to run it through the evidence mill and test it against three other types of portable heater: a convection heater, a fan heater and an oil-filled radiator to find out which gives the most heat for the lowest energy used. The aim is to find out which portable heater is best for heating you, and the room you're in. And how does all that compare to using gas central heating?This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: GREG FOOT
PRODUCER: SIMON HOBAN

Nov 3, 2022 • 27min
Natural Deodorants
The Natural Deodorant market has recently expanded, with plenty of products out there promising to keep you fresh, and dry, without the use of traditional ingredients such as aluminium salts. Listener PC Hollie got in touch on WhatsApp after she’d seen claims that regular deodorants and antiperspirants containing aluminium salts might be bad for our health, and wanted to know if natural deodorants are really better for us?She also wanted to know why they’re more expensive, if it’s worth paying more, and if they can do the same job and keep her dry while she’s fighting crime. Greg Foot finds out by speaking with a dermatologist Dr. Adil Sheraz, a chemist specialising in the makeup of natural products, Dr. Barbara Olioso, and by performing a “sweat test” where he convinced fellow gym goers to sniff his pits, and assess his sweat patches.This series, we’re testing and investigating your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there’s any evidence to back up a claim, drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807.PRESENTER: Greg Foot
PRODUCER: Kate Holdsworth


