British businesses have been urged to rise up and fight Angela Rayner's crippling new labour laws, amid dire warnings of the devastating effects they will wreak on the economy.

Conservatives have sent an open letter to company bosses this weekend urging them to speak out against the Deputy Prime Minister's radical plans – or be 'sleepwalked into disaster'.

Ms Rayner has been accused of taking a 'wrecking ball to the economy' with her Employment Rights Bill – which has also been dubbed 'the Unemployment Bill' over fears it will deter firms from taking on staff.

The proposals, currently being debated in the Lords and due to take effect later this year, will make it more burdensome to employ workers and will leave businesses vulnerable to ruinous strikes.

Central to the plans are the repeal of Tory trade union laws which will reduce the threshold for strike action and make union funding of the Labour Party automatic.