BBC News By Chris Morris image copyrightGetty Images Rich nations "must deliver now" on long-promised funding to help poorer countries fight climate change, says the President of the 26th United Nations Climate Change Conference (Cop26), which takes place in Glasgow in November. It has become "a matter of trust", Alok Sharma says. The developed world had pledged to provide $100bn (£720m) a year by 2020, but this has still not been achieved. Climate finance was discussed at length during a meeting in London of ministers and officials from more than fifty countries, According to the senior UN climate representative Patricia Espinosa, developing countries "were very insistent and very clear in their messages" that they expect commitments made up to 2020 to be met.