Police have told people wanting to see Concorde's last flight to stay away from Heathrow airport.
Concorde 's last flight will be on 24 October
Enthusiastic supporters of Concorde are expected to gather to watch Captain Mike Bannister land the aircraft for the last time on a commercial flight on Friday.
But Scotland Yard and BAA - the company that runs Heathrow - say the west London airport is not big enough to handle the extra people during a school holiday period.
They said "there are only very limited viewing facilities on the north side of the airport and the general public should not expect to be accommodated by turning up on the day."
There will be no special parking facilities and the spectators' viewing area remains closed on Department for Transport advice, as will the car park roofs.
The event is due to be televised live, and the plane will be watched by huge numbers of people in London and the South East as it makes its final descent.
British Airways (BA) sent special invitations to people across the world to be on the final flight from New York to London.
Company chairman Lord Marshall was due to be on the final flight.
BA is considering a plan to keep one of its seven Concordes flying for air shows and flypasts, and is expected to reach a decision soon.
The company is also considering flying a Concorde to the United States on 17 December to mark the 100th anniversary of the Wright brothers' first manned and powered flight.
A fall in passenger numbers and high maintenance costs have been blamed for the decision by BA and Air France to retire Concorde.