Eurotunnel, the operator of the Channel Tunnel, has halted its UK projects, claiming “unsustainable” levels of taxation has made any future investments “non-viable”.

The company said it had been informed its business rates would increase by some 200% from next year.

It hit out at the government, arguing that the higher costs were “clearly contrary” to ambitions of growing the economy and increasing investment.

The Treasury said it would support firms “hit hardest” by tax hikes and would continue talks with affected industries over such concerns.