His family are today paying tribute to him.
They said: "We are devastated by his loss. Our thoughts are also with those affected by this incident."
The collision, which left nine in a critical condition, involved two East Midlands Railway (EMR) trains.
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One smashed into the back of the other on the same line just after 5pm on Friday.
British Transport Police said more than 80 people were treated in hospital on Friday night, and 28 remained there as of Saturday morning.
Of the 100 victims, 11 were very seriously injured, 32 were seriously hurt, and 57 suffered minor injuries, the East of England Ambulance Service (EEAS) said.
Dave Calfe, general secretary of Aslef, the train drivers' union, said he "loved public transport" and worked on buses and coaches before becoming a train driver seven years ago.
Mr Calfe said: "We are all heartbroken by the death of Shaun Burton which leaves a hole in the lives of his family, friends, and colleagues, which will never be filled.
"Shaun, a driver at East Midlands Railway, joined the railway relatively late in life. He loved public transport - he used to work on buses and coaches - before he became a train driver seven years ago.
"He was dedicated to the job, and devoted to his colleagues and enormously popular at his depot. The railway family grieves his passing; no-one should go off to work in the morning and not come home.
"Our thoughts are with his family and friends tonight."
The Rail Accident Investigation Branch (RAIB) said on Saturday that its inspectors continued to gather evidence at the scene.
"RAIB will conduct a full, independent safety investigation into this tragic accident," the agency said in a post on X.
"We will provide a further update in the coming days once we know more."
The front of the 4.40pm departure from Corby to London St Pancras was crushed when it smashed into the rear of the 3.50pm departure from Nottingham, to the same destination, on Friday evening.
Passenger Pete Knapp, 40, described faces bloodied, smoke filling the carriage, and people unresponsive.
"Some people screaming, crying, they were confused and scared," he said.
Buckingham Palace said King Charles was "greatly saddened" by the rail crash and that his "thoughts and sympathies are with the family of the deceased and with all those injured of affected by such a tragic incident".
Network Rail said rail services around Bedford will be disrupted until 28 June while a "complex recovery operation" continues to remove the damaged trains and carriages from the track.
Engineers will then need to assess the damage and complete repairs, it added.
Passengers have also been advised to only travel if it is "absolutely necessary" within this period.
Sky News understands the accident investigation will take several months to complete.
Police were called to reports of a stabbing in Glycena Road, Battersea, in the early hours of Saturday.
A 17-year-old boy was found with serious wounds and died at the scene. He has been named by police as Jamal Coombes.
A 15-year-old girl and two boys - aged 14 and 15 - have been arrested on suspicion of murder and remain in custody.
Detective chief inspector Brian Howie said: "Our thoughts remain firmly with Jamal's loved ones following his tragic death.
"I understand the impact this incident has had on the local community. If you have any questions or concerns, do not hesitate to speak with one of our officers on patrol in the area this week.
"As our enquiries continue, I am appealing directly to the public. We believe that there was an altercation prior to the assault, so if you were in the Lavender Hill area between 03:30 hrs and 05:00hrs, specifically Glycena Road, Acanthus Road or Pountney Road, and witnessed a group of men running, please come forward.
"Any information, no matter how minor it may seem, could prove crucial. CCTV, doorbell or mobile phone footage may provide vital evidence.
"I would also urge members of the public not to assume that information has already been shared, any detail could be of significant importance to the investigation."
The amber warnings now cover parts of England and Wales over four days next week - as much of Europe swelters in blistering heat.
The first amber warning for Monday and Tuesday covers central and southern England and parts of Wales.
A second amber warning has now been issued for Wednesday and Thursday, covering similar areas as well as parts of northwest England and North Wales.
See the weather forecast where you are
The Met Office said temperatures are expected to reach 38C in London on Wednesday and Thursday.
Forecasters have "growing confidence" this week could break the record for the hottest June temperature of 35.6C set in Southampton in 1976.
Met Office meteorologist Jonathan Vautrey said: "It's particularly across central southern regions, where we have an extreme heat warning, an amber extreme heat warning issued, where we could see quite widely amongst the population some heat-related impacts throughout the week.
"Temperatures climbing towards the mid-30s in places, that is quite exceptional for June."
Elsewhere in Europe, an ongoing heatwave has triggered weather warnings.
French authorities have put into place public alcohol restrictions and have cancelled some outdoor sporting events.
Highs of 40C are expected there on Sunday with Monday due to be even hotter. Emergency services and military forces have been put on wildfire alert.
In Spain, the first heatwave of the year was declared by officials as temperatures reached up to 40C in the capital Madrid.
Aemet, the state-run weather forecaster, said 13 of the country's 17 regions were under "orange" alerts for heat on Sunday, meaning residents were being advised to take precautions amid the severe conditions. Meanwhile, the Basque Country, in Spain's northwest, was on red alert, the highest level of weather warning.
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A public outdoor screening in central Madrid of Spain's World Cup match against Saudi Arabia this evening has been cancelled because of concerns about the heat, The Guardian reported.
Temperatures of 37C are also forecast in Rome on Monday.
The England and Wales Cricket Board (ECB) has announced the formal reprimands over the incident that led to the players missing the second Test against New Zealand.
The board's statement added that "no blame should be attached to the players for violent conduct at the nightclub" and that Atkinson "was the victim of unprovoked attacks".
Both players are due to return for the series-deciding third Test against New Zealand at Trent Bridge on Thursday with Stokes to resume the captaincy.
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The ECB concluded that Atkinson was subjected to two separate attacks and did not retaliate.
A member of England's security staff was reportedly injured but Stokes was not present when the physical scuffle took place.
A statement from the ECB read: "Stokes and Atkinson were found to have breached specific contractual obligations that require England players to at all times maintain the highest standards of conduct and act in the best interests of England cricket.
"In addition to not being considered for selection for the second Rothesay Test, they have both been given a written warning as to their conduct. It was also concluded that no blame should be attached to the players for violent conduct at the nightclub.
"Stokes was not involved in the altercation and did not witness either incident. The evidence the ECB has seen demonstrates that Atkinson was the victim of unprovoked attacks and did not retaliate on either occasion."
There had been suggestions Stokes could resign as captain or retire from international cricket.
England coach Brendon McCullum admitted he was "slightly bewildered" after he heard news of the nightclub incident, which involved a Saracens rugby player.
Stokes fell five runs short of a century on his return to Durham after being dropped by England, who lost to New Zealand in the second Test on Saturday to square the Rothesay Series at 1-1.
England team-mate Josh Tongue admitted England missed Stokes. The fast bowler said: "Stokesy is an unbelievable player. It's always nice to see him get some runs.
"I made my debut when he was captain, I've got huge respect for Stokesy. Yeah, we've missed him, but we've got a lot of leaders in that team.
"Obviously Rooty (Joe Root) can step in as captain as well and he's an unbelievable player, unbelievable leader. It's been good."
A post shared by Kensington Palace on social media showed William in the scarlet dress uniform of the Welsh Guards, of which he is colonel.
The Prince of Wales was joined in the photograph by his daughter Princess Charlotte, who was in a cream dress.
The image was taken in the garden of Kensington Palace after last weekend's Trooping the Colour.
It is accompanied by the message: "Happy birthday and Father's Day to the best Papa in the World! We love you very much. C, G, C & L," followed by an emoji of two pink hearts.
The family were at the central London ceremony marking the official birthday of the monarch, where future king Prince George, 12, Princess Charlotte, 11, and Prince Louis, eight, joined their parents and their grandfather and the Queen on the Buckingham Palace balcony.
The Royal Family's X account also posted on Sunday, with a message saying: "Happy Birthday to The Prince of Wales!"
Another post from the royal account read: "Celebrating all Fathers, and thinking of those who wish they could be with their Dads, today."
The then-Prince Charles is pictured with his father in Lincolnshire upon completion of his RAF training in 1971.
In May, the Prince and Princess of Wales released a new photo of their daughter, Princess Charlotte, to mark her 11th birthday.
The picture showed Charlotte, who is third in line to the throne, standing outdoors in front of a background of verdant plants with white daisies at her feet.
In April, the Prince and Princess of Wales shared a holiday snap of their family, lying together in the grass in the sunshine, to mark the couple's 15th wedding anniversary.
Also that month, the Prince and Princess of Wales celebrated Prince Louis's eighth birthday by sharing a new photo of the youngster aboard a boat during their Cornwall holiday.
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It has been a notable year for football fan William, who was among the crowd celebrating in the stands at Tupras Stadium in Istanbul as his team Aston Villa won the Europa League to claim their first major trophy in 30 years.
The Prince of Wales also wished England good luck before their opening World Cup match against Croatia.
In a social media post, he wrote: "Good luck to England ahead of their first World Cup group match tonight! Here's to a great tournament ahead."
England won last Wednesday's match 4-2.