Why do some big successful brands go bust?

Toast is back for a new series, taking a look at the decisions that often left investors burnt.

I'm Sean Farrington, a BBC business journalist. I'll be hearing about the hype.

They're going to do the deal that makes them the most money at that point of time.

And I'm picking what went wrong, talking to owners

and employees to ask, what can we learn? It was being undercut by similar rivals. It just couldn't

survive. Toast. Listen first on BBC Sounds. BBC Sounds, music, radio podcasts. Hello and welcome to a brand new series of more or less,

the show that sprinkles a refreshing shower of statistical insight

over the parched lawns of misinformation.

This week, Mark Zuckerberg of Facebook says that most people don't have many friends.

We'll leave that claim there for now.

Two enthusiastic doctors reckon that 90% of cases of Alzheimer's disease can be prevented,

which is huge, if it's true.

We speak to someone who's almost the new Pope about the statistical evidence

for the existence of God. But first, claims about what immigrants contribute to the exchequer.

Loyal listener Barney got in touch to ask about a claim he heard London Mayor Sadiq Khan make on

LBC.

A skilled migrants family will contribute to the British economy £12,000 a year.

That's when you take away public services they use.

A British skilled workers family takes from the economy £4,400 when you include public services they use.

Barney wondered if we could check these numbers and explain them. Sure thing, Barney. The figures come from the Migration Advisory Committee's annual report. As it happens, Madeline Sumption,

friend of the programme and director of Oxford University's Migration Observatory,

...