Mayor of London Boris Johnson said: "We are delighted to support the Sustainable Events Summit in its mission to share knowledge and learning from global brands and leaders from the events industry with the wider live marketing and communication sectors.
"The event will build on the legacy of the 2012 Olympic and Paralympic Games to showcase best practice and provide knowledge and expertise to the UK event industry. I wish you a successful summit and look forward to hearing about the resulting actions and outcomes for a more sustainable industry."
The Sustainable Event Summit has also gained support from recently appointed Minister for Sport and Tourism Hugh Robertson MP.
He said: "Delivering a sustainable London 2012 Games was a key priority right from the outset and they have been hailed as the greenest ever Games by the Independent Commission for a Sustainable London 2012. The Sustainable Events Summit will be a chance for a wide range of global brands to come together, share knowledge and best practice and make sure that sustainability continues to be an integral part of staging future events."
Meanwhile, HM Treasury commercial secretary Lord Deighton added: "London 2012 showed there is a real appetite for sustainability to form a key part of the planning process for all types of events. In order to maximise this opportunity, brands and event planners need to come together and discuss best practice.
"This is why I'm delighted to show my support for the Sustainable Events Summit. London 2012 Olympic and Paralympic Games catalysed the creation of an international standard ISO 20121 which is changing the way events are planned around the world. We have proved beyond doubt that we can achieve great things when we come together and act as one. If an Olympic legacy proves to be the blueprint for a more sustainable events industry, then we will have achieved something great."
The final founding partner of the Summit is Grass Roots, who will be partners of the summit for the next three years.
"Grass Roots is proud to partner with and support the Sustainable Events Summit. Within our events businesses and across our whole group, sustainability and best practice are at the front of our minds and we are always looking for ways to instil this awareness right at the core of our operations and within client projects - making it a way of life," said Grass Roots deputy chairman David Hackett.