Police have been pictured ramping up security in Glasgow as the city braces for the arrival of dozens of world leaders for the start of the Cop26 climate summit on Sunday. A convoy of police motorbikes and vehicles was seen today leaving the Scottish Event Campus (SEC) - which will host the summit - via a security gate. Elsewhere, police officers in high-vis jackets and black face coverings were pictured patrolling the streets around the venue. Security will be of the utmost concern as leaders from around the world - including US President Joe Biden and German president Angela Merkel - are set to descend on the city. They will also bring their entourages and delegates, with more than 30,000 people expected to pass through the SEC between October 31 and November 12. It means a huge operation for security forces, who have erected serious security fences around the venue to stop would-be troublemakers from putting a stop to the proceedings. A convoy of police motorbikes and vehicles was seen leaving the Scottish Event Campus - which will host the Cop26 summit in Glasgow - via a security gate Police officers in high-vis jackets and black face coverings were seen patrolling the streets around the venue Security will be of the utmost concern as leaders from around the world - including US President Joe Biden and German president Angela Merkel - are set to descend on the city (Pictured: Police patrol streets around venue) Security forces have a huge operation on their hands as more than 30,000 delegates and world leaders are set to attend the summit (Pictured: Convoy leaving venue) Several police motorbikes exit the Cop26 summit venue in Glasgow amid typically rainy weather on Friday Police are already on patrol ahead of the start of the summit on Sunday Leaders' schedules: G20 summit and COP26 G20 Sat 30 10am: Arrival/meet-and-greet 11.30am: Family photo 11.45am: Roundtable discussions, Session 1: 'Global Economy and Global Health' 3pm: Side-event on 'Supporting small and medium enterprises, and women-owned businesses to build forward better'. Guest speaker: Queen Maxima of the Netherlands 7pm: Cultural event Sun 31 10.30am: Side-event on the role of the private sector in the fight against climate change. Guest speaker: HRH Charles, Prince of Wales 11.05am: Roundtable Session 2: 'Climate Change and Environment' 1.50pm: Roundtable Session 3: 'Sustainable Development' 3.40pm: Closing session 4.15pm: Concluding press conferences COP26 Mon 1 Opening ceremony: Boris Johnson to welcome world leaders with a ceremony featuring 'creative and cultural moments' and a speech by Prince Charles, after the Queen pulled out for health reasons National statements: Throughout the two-day leaders' summit, heads of state and government will set out their plans to tackle climate change and curb emissions 2.30pm-4.30pm: Event - Action and Solidarity, the Critical Decade, during which leaders will hear the latest scientific reporting, get an update on progress, and hear what action must now be taken Nov 2 9.15am - 12.45pm: Event - Action on Forests and Land-Use, at which leaders will hear how policies to protect forests and use land better can fight climate change 2.15pm-4.30pm: Event - Accelerating Clearn Technology and Deployment, at which leaders will be shown a 'positive vision' for how technology can be used to combat climate change including creating new jobs and economic growth Advertisement Part of President Biden's huge team arrived at Glasgow Airport today - only to be welcomed by brutally wet weather which has seen two road bridges 'washed away' by torrential rain. A C17 military jet kicked up clouds of vapour as it touched down on the runway before disgorging the president's Marine One helicopter and scores of security personnel, who were thankfully treated to a break in the downpours. A third jet with 'United States of America' on its fuselage was seen landing at the airport before taking off again, alongside planes from other nations including France. The main aim of the summit is to persuade countries to agree to take action to restrict global warming to nothing more than 1.5 degrees. Boris Johnson - who is hosting the event - previously hailed COP26 as a major moment, saying in September that 'this is the most important period I think now in the history of the planet - because COP simply must succeed'. The UK has set out a plan to achieve net zero emissions by 2050 and is urging other countries to follow suit. However, expectations appear to have now been dampened, with the Prime Minister saying earlier this week that it will be 'touch and go' on whether progress will be made. Environment Secretary George Eustice told Sky News that it is always difficult to agree big changes at large-scale events attended by many nations. He said: 'These events, because they are big, multi-lateral events with many countries, it is often difficult to get progress. 'We have been working incredibly hard though on our agenda which is getting more countries to commit to net zero by the middle of the century, getting commitments on decarbonising transport, particularly electrification of cars. 'And in my case working quite hard on a package around forests, mobilising finance and getting agreement on reducing and halting the net loss of forests around the world. 'So I am optimistic about these agendas. But always, obviously, when we are in the final days in the build up to it you do get nervous about whether you will get things over the line, certain agreements over the line. 'There is more to be done at the actual summit itself. I am optimistic but it is, as the Prime Minister said, touch and go. Mr Johnson said on Monday that he was 'worried' the COP26 summit could end in failure. The Prime Minister said a deal between world leaders on reducing harmful emissions 'can be done' but it is going to be 'very, very tough'. It comes after it was revealed that China, the world's biggest polluter, would not be attending. The PM spoke to the Chinese President on the phone on Friday morning after Beijing confirmed he will not be attending the COP26 summit in person but will address his fellow world leaders via video link. Police and security personnel outside the Scottish Event Campus in Glasgow today, where the Cop26 summit will be held Pedestrians shelter under umbrellas in Glasgow today as they walk past a digital display near the SEC venue in the city Grey skies over the SEC in Glasgow this morning ahead of the Cop26 climate change conference beginning this Sunday A C17 military jet kicked up clouds of vapour as it touched down on the runway before disgorging the president's Marine One helicopter A Boeing C-17A Globemaster III based at Stewart Air National Guard Base in Orange County, New York, with number 60005 at Glasgow Airport this week. The aircraft was carrying a helicopter which will be called Marine One when used by the President Scores of security personnel were also seen leaving the military plane. They were thankfully treated to a break in the downpours China has dashed hopes of significant progress being made at the summit in Glasgow after it recommitted to its old climate goals and failed to set out any additional ones. China is the biggest emitter of CO2 in the world and its formal submission ahead of COP26 restated its goal of achieving 'carbon neutrality' by 2060 despite other nations urging Beijing to go further. A Downing Street summary of the phone call with President Xi said Mr Johnson had 'acknowledged' China's plans to tackle climate change. A Number 10 spokesman added: 'He emphasised the importance of all countries stepping up their ambition on climate change at COP26 and taking concrete action to cut emissions and expedite the transition to renewable energy, including phasing out coal.' All rights reserved for this news site (dailymail) and under his responsibility