Lakshmi Mittal

Through his roles as executive chair of ArcelorMittal, the world's largest steel and mining firm, and head of stainless steel manufacturer Aperam, the Indian steel billionaire has amassed £17 billion. Lakshmi Mittal is the chairman of ArcelorMittal, the world's largest steel and mining business by output, and one of the richest people in the UK, with a net worth of $76.6 billion. He was born into a steel family and split from his siblings to found Mittal Steel, which he later merged with France's Arcelor in 2006.

Arcelor Mittal recorded a net profit of $15 billion in 2021, up from a net loss of $733 million in 2020, thanks to higher steel prices. In January 2021, Mittal handed up the CEO post to his son, Aditya Mittal, but remained executive chairman of ArcelorMittal. When Russia invaded Ukraine, he was compelled to "stop production at his plant in the country's heartland city of Kryvyi Rih for six weeks," according to The Sunday Times. In President Volodymyr Zelenskyy's hometown, ArcelorMittal is also "one of the largest employers."

Net worth: $17 Billion