When Christopher Muhr, one of the founders of the international group discount buying site Groupon, heard about this book, he begged me to do one thing. ‘Please’, he said, ‘you’ve got to highlight the entrepreneur’s big problem in London: finding something to eat late at night.’ It didn’t sound like the world’s most urgent issue, but Muhr was adamant. ‘It’s strange’, he agreed. ‘You’re in this huge metropolis with millions of people, but, there’s nowhere at all to eat after 10 p.m. I spent most of the many nights I worked on my site having to fight with the junkies around King’s Cross station to get to Burger King before it closed. If you missed that, you were in trouble.’

London’s dearth of late-night eateries ...

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