The UK was the most attractive place to list shares of the global energy and metals company Metlen, according to its founder and CEO.
Evangelos Mytilineos told the BBC that "the tide was turning" after a rocky period after Brexit when the London Stock Exchange looked unattractive.
His comments are in contrast to recent widespread concern about the steady outflow of some big name companies from UK markets, particularly to the US.
However, Mr Mytilineos said high energy costs were an obstacle to European and UK customers and he believed politicians had failed to be honest about the costs of the energy transition.
Metlen employs nearly 10,000 people in 40 countries and moved its primary listing from Athens to London in August this year. With a total value of over £5 billion, it was the fastest company to be admitted to the FTSE 100 list of the UK's most valuable listed firms.
