Scottish activists traveled to London to join a four-day long campaign against climate change.

Members of Extinction Rebellion Scotland arrived in the city in buses from Glasgow and Edinburgh on Thursday morning.

They joined hundreds of climate change activists in their fourth day of roadblocks in the city, causing travel chaos and disruption to Londoners.

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The call to action came after enviromental campaigners across the UK began nationwide roadblocks to raise awareness of their cause earlier this week.

The Herald: Picture: Extinction Rebellion Scotland Picture: Extinction Rebellion Scotland

According to Metropolitan Police, over 400 people have been arrested in relation to Extinction Rebellion demonstrations, and Edinburgh saw over 700 activists attend their protest on Tuesday.

Read more: Extinction Rebellion arrests in central London amid climate change protests

Organisers said they wanted 'to welcome our Scottish rebels in style today' and called on any pipers in the area to join in.

Scots were greeted with a kilted piper as they arrived in the city and immediately took their place in Parliament Square to begin discussing plans on the 'International Rebellion'.

Pictures show groups of young people gathering in the capital, and Extinction Rebellion groups from other cities have voiced their support for their 'friends from the north'.

London Mayor Sadiq Khan said on Twitter: "We're facing a climate emergency.

"I fully support the right of protesters to protest on this vital issue, and urge organisers to work with police to ensure their demonstrations are peaceful and lawful and that disruption is kept to a minimum."