In a statement, a Metropolitan Police spokesman said:
"The land had been leased to Crown Housing Association to providenon-permanent accommodation for their own tenants who hold short-term leases.
The lease to Crown Housing Association expired in December 2012. We continue to work closely with Crown Housing Association regarding arrangements with current occupiers before we proceed to market."
More top news
Londoners who have received new electronic gadgets for Christmas are being advised to take simple steps to protect them from thieves.
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.