PRIME minister Gordon Brown faces a difficult decision on supporting expansion at Heathrow but there will soon be hundreds of him knowing where their vote lies.

With the Government due to make an announcement next month on whether it backs a third runway at the airport, anti-expansion protestors are planning a big demonstration.

Hundreds of them will gather at a park in Hounslow next Saturday (29) where they will put on masks and false ears to look like the Prime Minister and deliver the message 'Just Say No'.

They will be joined by local councillors and MPs in standing directly under the flight path in a united show of strength as representatives from all the groups fighting expansion are expected to attend.

Geraldine Nicholson, Chairwoman of NoTRAG (No Third Runway Action Group), said: "We are fighting for the very survival of our communities that a third runway would destroy.

"But we will be joining with people from all over London to call on Gordon Brown to drop all the plans for expansion at Heathrow. No to a third runway; no to mixed-mode."

John Stewart, Chairman of HACAN, said: "All the Gordon Browns in the world - and there will be a lot of them at this protest - won't convince anybody that expansion is needed.

"It's bad for the environment and most people don't buy his line that it's needed for the health of the economy.

"This protest is not the end of our fight. We are increasingly confident that, whatever decision Gordon Brown makes, expansion will not happen. All the other political parties have said they would drop the proposals. It's time Gordon listened to common-sense."

Anna Jones, Transport Campaign at Greenpeace, said: "These proposals would have a dreadful effect on the local community. A plane overhead every 90 seconds throughout the day is just unimaginable.

"The destruction of a living community to build a 3rd runway is brutal. But the impact for climate change is equally serious. A third runway alone would be responsible for the same amount of CO2 emissions as the entire economy of Kenya in one year."

The protest takes place at 11am in Lampton Park, Lampton Road, Hounslow.