Graphcore makes high-end chips that can be put into computers to make them faster at crunching data. The chips are specifically designed to accelerate machine learning, otherwise known as AI. Founded just two years ago, today’s funding values the company at $1.7 billion, meaning it joins fintech firms Monzo and Revolut as the latest UK companies to earn unicorn status. Unicorns are private companies valued at more than $1 billion.