Environmental groups are demanding that the International Maritime Organization speeds up action on climate change ahead of a vital meeting next week.

Organisations including Clean Shipping Coalition (CSC) and Ocean Conservancy say the United Nations body faces a “defining moment” in the race to decarbonise shipping.

A total of 175 member states are meeting in London between 20 and 24 March for working group talks as negotiations continue on revising shipping’s current climate targets.