The UK’s tech industry reached $1 trillion in value last year, making it only the third country ever to hit this milestone after the US and China. London on its own has created more than 20 unicorns — firms worth more than $1 billion — since 2021. That has been helped on by a string of IPOs over the past two years, including the likes of takeaway app Deliveroo and payments firm Wise. In fintech, the capital’s speciality, London has even been able to overtake New York and San Francisco in funding, attracting around £8 billion in investment last year...