Some of the world's biggest investment houses controlling $30 trillion (£23 trillion) worth of funds have agreed to join forces to put pressure on governments to tackle climate change.

Investors such as Aviva, Schroders and Legal & General Investment Management will lobby governments around the world to adhere to the promises they made to tackle pollution in the Paris Agreement on climate change.

UK pension funds representing organisations and companies such as the BBC, HSBC, Transport for London, Bedford Borough Council and the Environmental Agency, are also taking part in the campaign.

The Paris Agreement, made in 2015, was signed by 194 states and the European Union. It commits signatories to work to keep a lid on pollution to ensure average temperatures don't rise.

The campaign will include efforts to encourage the US government to stick to Paris Agreement, which President Trump promised last year to either renegotiate or pull out of.

Last year, he said the agreement was "simply the latest example of Washington entering into an agreement that disadvantages the United States to the exclusive benefit of other countries”.