By Kate Whannel
Political reporter, BBC News
Prime Minister Rishi Sunak volition not be the COP27 clime league successful Egypt adjacent month, Downing Street says.
No 10 denied this showed a deficiency of committedness to tackling clime change, but Labour accused the PM of a "massive nonaccomplishment of clime leadership".
Mr Sunak's predecessor Liz Truss had been owed to be the conference.
But No 10 said the caller PM would not beryllium going "due to different pressing home commitments including preparations for the autumn Budget".
A Downing Street spokeswoman said the UK would beryllium represented by outgoing COP president Alok Sharma, and different ministers.
"We stay committed to nett zero and to starring planetary and home enactment to tackle clime change. The UK is forging up of galore different countries connected nett zero," she added.
"We volition evidently proceed to enactment intimately with Egypt arsenic the hosts of COP27 and to marque definite that each countries are making advancement connected the historical commitments they made astatine the Glasgow clime pact."
COP27 volition instrumentality spot successful Sharm el-Sheikh from 6 to 18 November - finishing the time aft Chancellor Jeremy Hunt is owed to acceptable retired the UK's taxation and spending plans.
The yearly UN clime summits are designed to assistance governments hold steps to bounds planetary somesthesia rises. The UK hosted past year's summit, COP26, successful Glasgow successful 2021.
The quality that Mr Sunak volition not beryllium attending comes arsenic a UN study warns determination is "no credible pathway" to support the emergence successful planetary temperatures beneath a cardinal threshold of 1.5C.
Scientists judge that going beyond 1.5C would spot unsafe impacts for radical each implicit the world.
The UN's emissions spread survey besides said that governments' carbon-cutting plans since past year's clime acme had been "woefully inadequate".
'Total failure'
The acme successful Egypt is expected to absorption connected 3 main areas - reducing emissions, helping countries hole for and woody with clime change, and securing method enactment for processing countries for these activities.
Labour's shadiness clime alteration caput Ed Miliband told the BBC: "You've got satellite leaders from astir the globe gathering unneurotic to speech astir however we tin tackle the biggest semipermanent menace we look [...] and our premier curate can't beryllium bothered to crook up.
"I deliberation that is simply a full nonaccomplishment of generations contiguous and generations successful the future."
The Liberal Democrats besides criticised Mr Sunak's determination not to attend, with person Sir Ed Davey saying it "flies successful the look of the UK's arrogant contented of starring the satellite successful our effect to the clime change".
On Wednesday, UN Secretary General Antonio Guterres told the BBC that helium would similar to spot some the PM and King Charles successful attendance. Now it looks similar neither volition beryllium there.
Given that the UK authorities was not conscionable the big of COP26 but the main driving unit down its constricted successes, it is antithetic that it volition not person a large governmental fig successful attendance.
While Alok Sharma volition beryllium determination arsenic the outgoing COP president, helium is not of the aforesaid fertile arsenic a premier curate oregon monarch.
The Egyptian organisers volition apt beryllium furious astatine this crook of events - and it volition not augur good for the league if the leaders of 1 of the world's starring lights successful taking enactment connected clime can't prioritise travelling to the gathering.
Last month, nether the Truss premiership, the authorities announced a review of the UK's people to execute nett zero c emissions by 2050.
Former Energy Minister Chris Skidmore was tasked with starring the reappraisal "with a absorption connected ensuring the UK's combat against clime alteration maximises economical growth, portion expanding vigor information and affordability for consumers and businesses".
Last year's Glasgow acme was attended by then-Prime Minister Boris Johnson, arsenic good arsenic Mr Sunak who was past chancellor.
More than 200 governments person been invited to COP27. However, immoderate leaders of large economies are not expected to attend, including Russian President Vladimir Putin.
US President Joe Biden is readying to go, but China has not yet confirmed if its leaders volition participate.
Earlier this month, Buckingham Palace confirmed King Charles would not beryllium attending the conference.
The monarch has a long-standing involvement successful biology issues, but the Palace said it had sought proposal from then-PM Ms Truss and that "with communal relationship and respect determination was statement that the King would not attend."