<P> For more than three hundred years it has held the official residences of the First Lord of the Treasury , an office now synonymous with that of Prime Minister , and the Second Lord of the Treasury , an office held by the Chancellor of the Exchequer . The Prime Minister 's official residence is 10 Downing Street ; the Chancellor 's official residence is next door at Number 11 . The government 's Chief Whip has an official residence at Number 12 , although the current Chief Whip 's residence is at Number 9 . </P>
<P> For more than three hundred years it has held the official residences of the First Lord of the Treasury , an office now synonymous with that of Prime Minister , and the Second Lord of the Treasury , an office held by the Chancellor of the Exchequer . The Prime Minister 's official residence is 10 Downing Street ; the Chancellor 's official residence is next door at Number 11 . The government 's Chief Whip has an official residence at Number 12 , although the current Chief Whip 's residence is at Number 9 . </P>
who lives next door to the prime minister
who lives next door to the prime minister
the Chancellor 's
the Chancellor 's