After accepting the resignation from Gordon Brown, the Queen invites David Cameron to form a new government. (On his way to the Palace, a huge rainbow appeared in the sky over London which seemed like a rather good omen for the new PM.)
The Camerons posed outside before entering 10 Downing Street, their new residence.
And below...officially entering his office also at 10 Downing this evening.
And now, the real work begins.