Protests organised by the climate activism group Extinction Rebellion have got underway in London.
The group says it will protest throughout the capital over the next two weeks.
It is the largest action of its kind since the group came to London for a fortnight in April 2019.
Here are just some of the scenes at the protests today (23 August).
It is the largest action of its kind since the group came to London for a fortnight in April 2019.