Britain’s 15 Powerhouses: The Fastest Growing Start‑Ups of the Year

Black Swan Data Takes the London Startup Crown

In a bustling city where fintech pioneers and fashion innovators line up for headlines, Black Swan Data has just been crowned the fastest‑growing startup in Britain. The London‑based firm has turned data crunching into a whole science, turning weather patterns, social media chatter and consumer feedback into winning strategies.

How It All Started

Founder Steve King, 41, dreamed big in 2011. With a £2.5 million infusion from private‑equity giant Blackstone, he built a company that now boasts £8.4 million in sales this year alone. From the ground up, Black Swan Data has proven that a little win with data can lead to a huge leap in growth.

The Sunday Times Sage Startup Track

Black Swan Data clinched the top spot in the inaugural Sunday Times Sage Start‑up Track 15, a competition that spotlights Britain’s most electrifying young businesses.

Fresh coffee delivery “Pact” – getting your caffeine fix before your coffee machines cry.
Popcorn maker Propercorn – turning kernels into gold.
Online fashion retailer Pink Boutique – because who doesn’t need a quick fab outfit?
And the standout: Black Swan Data – data with a dash of drama.

Growth Stats That Matter

All 15 startups in the track saw their sales rocket, with average annual growth rates ranging from a staggering 194 % to a mind‑blowing 597 % per year over the last two years. Combined, they hit £85 million in sales.

Collectively, the group employs 1,330 people. The biggest name on that list? TransferWise, which alone brings 400 bright-eyed talent to the mix.

Ready for a Full Look?

Want to dive into the full list of champions? Tally up their sales, staff, and snazzy headlines, and you’ll see why London’s startup scene is buzzing louder than a DJ at a rooftop party.

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