The PM's official spokesman says Downing Street has “no comment” to make on a letter written by COP26's former president Claire O’Neill, in which she accuses him of failing to support her work.

He thanks Ms O'Neill for her work towards COP26, and says details about her replacement - which will be a "ministerial post" - will be set out "in due course".

Asked about Ms O'Neill's comments that the PM doesn’t understand climate change, the spokesman points to the PM's speech and says the government is “going to ensure COP26 is a successful event”.

He dismisses the idea that the conference might be moved from Scotland to England.