Many countries have had statutory incomes policies, included the United States and Britain. Ted Heath's government legally enforced wage increase limits, and Jim Callaghan's government had the "social contract", a voluntary agreement with the trade unions whereby wage increases would be limited to below the inflation rate and prices were legally controlled by the price commission (there was also price subsidies). Many called it the "social con-trick" and when the agreement expired Callaghan enforced a 5% wage increase limit by punishing private companies who broke the limit and enforcing it on the public sector, despite not passing any legislation. This led to what became known by the press as the Winter of Discontent. Gordon Brown tried to similarly control wages without passing legislation by severely restricting public sector wage increases knowing the knock on effect it would have on the private sector. Thatcher just relied on doubling unemployment to keep wage increases down without the need for a statutory incomes policy. IMO
But yeah, we've had statutory incomes policies in Britain.