Finchley remembers Margaret Thatcher
8 April 2013 Last updated at 15:59 BST
It was in London that Baroness Thatcher's political career officially began when she was elected as MP for Finchley in 1959.
She served the constituency throughout her time as Prime Minister and only stepped down two years after leaving Downing Street.
BBC London's political correspondent Karl Mercer meets former constituents to look back at her career as their MP.