LABOUR leader Jeremy Corbyn and singing socialist Charlotte Church will put on a display of “trade union pride” today with hundreds of Welsh workers.

The high-profile pair will be among politicians and celebrities marching through Cardiff alongside steel workers, teachers and firefighters to protest against the Tory Trade Union Bill.

The national show of defiance to the Bill comes after the Welsh Assembly voted to block its implementation in Wales.

Cardiff Central MP Jo Stevens will tell the crowds that the Bill is “a red line the Tories will fail to cross.”

Legal advice published by the Wales TUC proves that the Bill breaches the devolution settlement.

But PM David Cameron insists it is not a devolved issue and the dispute may have to be settled in the Supreme Court.

Labour AM Mick Antoniw, a former trade union solicitor for Thompsons, vowed that the Welsh government will overturn any attempt to impose the “ridiculous law” in Wales.

He said: “The Welsh Assembly is overwhelmingly opposed to the Trade Union Bill as an unnecessary and vindictive law that will undermine decades of partnership building between employers and trade unions in Wales.

“It is also a direct attack on the devolution settlement.”

The march to the National Museum of Wales will be led by a fire engine provided by the Fire Brigades Union (FBU).

FBU Wales secretary Cerith Griffiths said: “There is absolutely nothing democratic about the Trade Union Bill, it is a vicious and vindictive act by a Conservative Party hell-bent on extending their bullying tactics and aiming them at trade unions.

“They have attacked the elderly, they have attacked the disabled, they have attacked the most vulnerable in society, now they are attacking the ‘hard-working people’ that they claim to stand up for.”

Mr Griffiths, who is also standing for Plaid Cymru for the Welsh Assembly election, said: “They are aiming to silence a movement that stands up against these sort of attacks. If they think they will silence firefighters in this way then they had better think again.”

Parts of the Bill could be defeated in the Lords, where the government does not have a majority, on March 16.

Plans to scrap check-off and facility time could be removed when peers vote on amendments, while online strike ballots could be included in the Bill.