Charlotte Church brought a choir from Wales to perform a song written for the march. She suggested people on the march should name it.

“It’ s an absolute priviledge and honour to march with you today. What we have done here today is stage the biggest climate march in UK history,” she said. Here are the lyrics to the song:

Way before I was born we knew we had learned we should be concerned or we’re doomed

But chose to laugh in this face of an escapable fate...how brave

To pass on the buck to the unborn, how brave

Politics to one little fish means nothing but the opinion of all of us millions must count for something

Despite facts irrefutable it’s business as usual