Otta, a startup that helps job seekers find roles at fast-growing companies, has revealed the most innovative companies in London to work for in 2021. Fifty startups and scaleups appear on the Rocket List, including tech unicorns Cazoo, Hopin (now a ‘double unicorn’) and Gousto, along with fintech firms, Revolut and Checkout.com, which are hiring for the most roles right now (79 and 68 respectively).