Last month, London 2017 announced record sales with more than 230,000 tickets sold for the World Para Athletics Championships, although International Paralympic Committee officials claimed today that over 250,000 have now been sold.

Despite the fact many of the 500,000 tickets available remain unsold, it is claimed sales are bigger than all of the previous eight editions of the Championships combined and the biggest-ever outside of a Paralympic Games.

In a joint appeal with Dave Henson, who last year won the 200 metres T42 bronze medal at the Rio 2016 Paralympic Games and has been selected to compete at the World Championships, Prince Harry said why he believes people should buy tickets to the event.

"Buy your tickets, get down there, bring your family and friends and come down and support," he says.

"Be there with everybody else, creating that atmosphere that’s going to be a life-changing moment for Dave and everyone else."

Henson was serving with the Royal Engineers was injured in 2011 in Afghanistan when he stood on an improvised explosive device (IED), resulting in the loss of both his legs.

It was during his rehabilitation that Henson found a new passion for sport, providing the catalyst for his recovery.

He discovered a talent for running at the inaugural Invictus Games in 2014, where his personal best saw him comfortably into the world top 10.

Henson has since gone on to compete at the 2016 European Championships in Italian city Grossetto, where he took home 200m T42 silver, before winning his Rio 2016 bronze.

The 32-year-old revealed that watching the London 2012 Paralympics helped him during his recovery.

"I was still very early on in my recovery and rehab stage, it was a little bit of inspiration because it was suddenly an exposure to people absolutely smashing sport," Henson said.

"I went to the Olympic Park a couple of time and it was just such an incredible atmosphere, everyone was so happy.

"I don’t have a World Championship medal, so to take one of those home would be just incredible.

"I’d love to come away from it with a World Championship medal around my neck.

"Spectators will see the world’s best Para-athletes compete in one of the world’s most iconic sports venues.

"Every single member of the GB team, every single athlete that has qualified is an incredible sportsperson."

Tickets for the World Para Athletics Championships start at £10 ($12.90/€11.30) for adults with children’s tickets priced at £5 ($6.50/€5.70) for every session.

More than half of the tickets cost £20 ($25.90/€22.70) or less.

Today, it was confirmed that more than 100 community groups from across the country are supporting the #FillTheStadium campaign and will be attending the Championships, which are due to finish on July 23.

Organisers worked to make special group rates available to guide and scout groups, sports clubs, youth clubs, charities and social enterprises nationwide in recognition of the contribution they have made to the lives of many people in the UK, in particular children and teenagers.

The 100-plus community groups - which include Herne Bay Boccia club in Kent, the fourth Tiptree Brownies in Essex, Friends of the Elderly and Love to Swim - will be spectating at the Championships.

In attending, the community groups join celebrities like Dame Barbara Windsor and the foundations and trusts of 10 professional football clubs including Tottenham Hotspur and Arsenal in throwing their support behind #FillTheStadium.

"We have signed up to bring our Get On Track to the World Para Athletics Championships because we want them to experience a world-class sporting event and see the impact of sport in their home city," Theo Spalding-McIntosh, the Dame Kelly Holmes Trust's athlete team leader for London and South East, said.

"It is a fantastic opportunity, we had to take it up."

The World Para Athletics Championships precede the International Association of Athletics Federations (IAAF) World Championships, which are scheduled to take place here from August 4 to 13.

London 2017 marks the first time ever that both the World Para Athletics Championships and IAAF World Championships are being held in the same city in the same summer.