Sir Alex Ferguson and Gareth Southgate among leading football figures attending Manchester Cathedral for private service from 14:00
Thousands of people earlier lined the streets of Manchester to honour one of English football's greatest players, Sir Bobby Charlton
The funeral cortège arrived at Old Trafford and passed in front of the stadium to allow fans to say goodbye
Some 1,000 guests packed the service, including the Charlton family and Sir Bobby's friends
Sir Bobby died last month after an accidental fall at the nursing home where he was receiving dementia care. He was 86
He made 758 appearances for Manchester United, scoring 249 goals and winning three league titles, the FA Cup and the European Cup
You can watch the procession in Manchester by pressing play at the top of the page
Simon Stone
BBC Sport
Manchester United manager Erik ten Hag cannot attend the service due to a prior engagement in the Netherlands he couldn't get out of.
But his predecessor Ole Gunnar Solskjaer has just walked in, with his former assistant, ex team-mate and current Middlesbrough boss Michael Carrick.
Image source, BBC SportOle Gunnar Solskjaer
To watch our continuing coverage as fans line the streets of Manchester to honour Sir Bobby, click on the play button at the top of the page.
After leaving Old Trafford to warm applause, the funeral cortege made its way towards the city centre and on to Manchester Cathedral. You can see a map of the route below.
Image source, Getty ImagesFormer Manchester United player and teammate of Sir Bobby, Alex Stepney, has paid tribute to his friend, calling him a "great family man" and saying his success "never went to his head".
"My memory was meeting him for the first time when I got signed [at United]," Stepney told BBC News. "I knew straight away what a great guy he was, a humble guy.
"Nothing was over his head or anything like that, it was all about playing for Manchester United. Even on international duty it was about winning and that was what Bobby Charlton was all about. A humble guy, a great family man. It never went to his head."
When asked about what Charlton was like in the dressing room, Stepney said: "It didn't matter what the score was, at half-time he would say 'we can score four more'. That was Bobby. He was a winner. He never wanted to be a loser. He was an absolute winner - let's be honest he scored some great goals to win games."
Simon Stone
BBC Sport
England manager Gareth Southgate is the latest to arrive.
Paul Scholes and Peter Schmeichel are two of the former Manchester United players who are also already in Manchester Cathedral, along with former Premier League chief executive Richard Scudamore.
Southgate will be hoping next summer his England can emulate Charlton’s by winning a major trophy.
Charlton, along with Nobby Stiles, are the only Englishmen to play in a World Cup final victory and also a European Cup one.
Image source, BBC SportFormer Red Devils striker Andy Cole has been spotted arriving at the cathedral alongside Pat Crerand, who played with Sir Bobby in the 60s and 70s.
Former Manchester United goalkeeper Alex Stepney, who won the European Cup alongside Sir Bobby in 1968, was also seen arriving with family.
Alan Kennedy, who played for United rivals Liverpool in the 1970s and 1980s, was also pictured arriving for the service.
Image source, Reuters
Image source, Reuters
Image source, ReutersSimon Stone
BBC Sport
Image source, ReutersSir Alex Ferguson has arrived at the cathedral along with former Manchester United chief executive David Gill.
Sir Bobby was instrumental in Ferguson becoming manager in 1986 - and keeping him at the club when he was under huge pressure in 1989. The rest is history, with Sir Alex going on to preside over one of the most successful periods in the club's history.
Image source, Getty ImagesOver the course of his 17-year career Sir Bobby Charlton lifted trophies, won awards, broke records and thoroughly earned his status as a legend of the beautiful game.
During his time at Manchester United he recorded 758 appearances and 249 goals, and joined the Red Devils in winning three league titles, one FA Cup and a European Cup.
His finest hour at club level came in May 1968 when he captained United to European Cup success at Wembley, scoring twice in the 4-1 win over Benfica.
He famously missed the post-match celebrations to conduct a solitary remembrance for the friends he had lost in the Munich air disaster 10 years earlier.
Image source, Getty ImagesFrom 1958 to 1970 he played for England, and achieved 106 caps, a record-breaking 49 goals, the famous 1966 World Cup win, and a Ballon d’Or.
Charlton of course also played a starring role in England's famous 1966 World Cup-winning team.
Under Sir Alf Ramsey's management, he scored twice in the semi-final win over Portugal. England then beat West Germany 4-2 in extra time to take the trophy at Wembley.
Following his retirement, Sir Bobby went on to serve at Manchester United as a director for 39 years, and his legacy lives on through the life-changing work of the Sir Bobby Charlton Foundation, external.
Bobby Charlton: BBC Sport looks back at the life of Manchester United and England legend
Simon Stone
BBC Sport
There are lots of camera crews at Manchester Cathedral waiting for guests to arrive.
Today is much more than only a Manchester United event, with dignitaries from the wider football family expected for the service.
Image source, BBC SportA sea of flowers and memorabilia appeared at Old Trafford following Sir Bobby's death, with many still on show ahead of today's ceremony.
Image source, PA Media
Image source, GoogleManchester Cathedral is where the service itself will be held - the scene of some of the city's most solemn ceremonies in recent years.
Just last month, Manchester City bid farewell to one of its own sporting heroes, Francis Lee, in an emotional service there.
At 14:00 about 1,000 invited guests including members of Manchester United's 1968 European Cup-winning team, players from the current first-team squad and leading sporting figures will take their places inside.
The ceremony, which will not be filmed or broadcast, will include eulogies and tributes from former United chief executive David Gill, former Manchester United Foundation chief executive John Shiels and a personal tribute from Charlton's family.
Hymns will include Abide With Me, which is traditionally sung before the FA Cup final, Jerusalem and a rendition of How Great Thou Art by opera singer Russell Watson.
Simon King
BBC weather presenter and meteorologist
It's been a blustery autumn morning so far in Manchester with leaves blowing in the wind, but as the funeral procession gets underway we could see the winds strengthen a bit further due to Storm Debi.
Wind gusts of around 40mph have been observed in Manchester but they could peak at around 50-60mph for a short time. As a result the Met Office has issued yellow severe weather warning that covers Greater Manchester until 18:00.
For those paying their respects though, the better news it that the heavy rain experienced this morning has cleared away to the north so at least there will be some sunny spells with only a small chance of a passing shower.
Image source, EPAOne of the most enduring images of Sir Bobby's life is the "Holy Trinity" statue outside Old Trafford - and it is likely to be a natural focal point for today's tributes.
Charlton stands proudly alongside former teammates and fellow United legends George Best and Denis Law.
The work of sculptor Philip Jackson, it was unveiled on 29 May 2008 in a ceremony that celebrated 40 years since the club lifted the European Cup for the first time.
Simon Stone
BBC Sport
The barriers are in place that will allow the funeral cortège to pass between the front of Old Trafford and the Holy Trinity statue.
The car park Charlton used to use on matchdays is close by.
He was a regular presence in the directors box until the Covid pandemic, and was always one of the most sought after people to get a picture with.
Image source, BBC Sport
Image source, ReutersWhile the funeral itself will be attended by the great and good of the football world, thousands of fans are expected to line the streets to pay their own tributes.
Old Trafford in particular is braced for large crowds. A sea of floral tributes were left at the stadium after Sir Bobby's death.
The funeral will be a celebration both of his "incredible life" as a family man, and "one of the finest footballers this country has ever produced", Manchester United said.
The service at the cathedral will remain private and will not be filmed or broadcast.
Image source, EPAManchester Cathedral is expecting up to 1,000 guests to attend the funeral including the Charlton family, friends of Sir Bobby, and leading figures from across the sporting world.
Simon Stone
BBC Sport
This was the scene at Old Trafford as dawn broke this morning.
The pictures around the "Holy Trinity" statue of Law, Best and Charlton have all been changed in honour of Sir Bobby.
Charlton's cortege will pass Old Trafford at 1330 GMT on its way to Manchester Cathedral.
Image source, BBC SportOld Trafford