Since 2000 in London on average 10,300 properties have sold every month according to ONS data.
In July 2002 18,000 sold.
In Feb 2009 just 3,251.
Last month (November) 6,800 changed hands.
Meanwhile, across the whole country..
Since 2005 across the UK on average 86,000 properties have sold every month according to ONS.
In June 2006 153,000 sold.
In Jan 2009 just 33,000.
Last month (November) 92,000 changed hands.