The biggest and loudest "no" in the world is set to take shape tomorrow as thousands of people join a protest march against Heathrow expansion.

Marchers at the Make a Noise carnival will walk from Hatton Cross to Sipson, the village that would be destroyed if a third runway went ahead, where they will form a giant NO.

This will be followed by speeches and carnival style entertainment.

Speakers at the event will include leading environmentalist George Monbiot, representatives of most political parties, councillors, school leaders and community activists.

John Stewart, chairman of action group Hacan, said: "Heathrow will never before have seen a spectacle like this. Thousands of people will be demonstrating against Heathrow expansion.

"Coaches will be coming from as far away as Manchester and Southampton. And we will be joined by campaigners from Athens airport in Greece.

"Heathrow has become a symbol of worldwide resistance against aggressive airport expansion."

The Make a Noise carnival was organised by a number of climate change action groups, including Greenpeace and Hacan, local authorities and the 2M coalition.

Sipson Road will be closed for the afternoon.

There will be food and drink stalls, fairground rides and face-painting for children and a special display, Sipson Through the Ages, about the community facing destruction.

A photo of protesters will be taken at Little Green near Richmond Theatre at 12.30pm on the day.

Four coaches will be provided by Richmond Heathrow Campaign and the Kew Society for residents who are unable to complete the two-and-a-half mile walk.

The coaches will leave Little Green at 12.40pm.

Saturday's programme

Noon: Marchers begin to assemble at Hatton Cross, close to the underground station.

12.30pm: Deputy Mayor of London Richard Barnes welcomes the marchers on behalf of Boris Johnson.

12.45-1pm: The march sets off.

1-2pm: Marchers follow Eastern Perimeter Road then Northern Perimeter Road to Harlington Corner, on to Bath Road and Sipson Way.

2-2.30pm: Everybody is formed into a giant NO at Sipson War Memorial Recreation Ground. Leading environmentalist George Monbiot gives a speech followed by a pupil from Hounslow Heath Infant School.

3-4pm: Other speeches and bands take to the big stage, located on the grounds of Heathrow Primary School.

Speakers will include: John McDonnell MP, Susan Kramer MP, Justine Greening MP, Caroline Lucas MEP, Hillingdon Council leader Ray Puddiford speaking on behalf of the 2M councils and Geraldine Nicholson, chairwoman of the action group NoTrag.