Arguments from both sides of the issue over expansion at Heathrow Airport will be heard when the Mayor of London visits Hillingdon.
Boris Johnson is holding the second of his People's Question Time events and has chosen to dedicate it entirely to the third runway debate.
He is bringing a panel of speakers, both for and against the BAA plans, to The Beck Theatre, in Grange Road, Hayes, on Wednesday at 7pm.
Deputy Mayor Richard Barnes, who is also a Hillingdon councillor, will chair the event and there will be representatives from BA, BAA and Hillingdon Council.
The decision by the Government whether to back expansion has been delayed several times and may be held up again as
Prime Minister Gordon Brown has apparently agreed to meet with back-bench MPs.
Geoff Hoon, the Secretary of State for Transport, will deliver the verdict, which if positive will mean the destruction of Sipson to make way for the runway.
Mr Johnson is expected to argue against in the debate, in line with national Conservative policy of favouring high speed rail links.
Hillingdon Council leader Ray Puddifoot said: "I am delighted Boris is coming to Hillingdon to support residents in the fight against the runway. He is a man of action."
* People's Question Time is a free event and tickets, limited to two per household, are available by calling 020 8561 8371.