Trafalgar Square is unlikely to be chosen asthe location for a permanent memorial to Margaret Thatcher, according to CityHall sources.
Labour has attacked the idea of a Thatcher statue on the fourthplinth, claiming it would "demean" London.
The leader of the Labourgroup on the London Assembly Len Duvall said:
London Mayor Boris Johnson is said to be "very keen" on a memorial in London and has promised to help find a suitable high-profile site.
But City Hall regards the fourth plinth as unsuitable - not least because it was designed for a figure riding a horse.
More recently, the plinth has developed a reputation as a showcase for contemporary art.
There are also fears another statue, away from the plinth would damage the "symmetry" of the square.