10 Downing Street in London, England, is the headquarters of the Government of the United Kingdom and the official residence of the Prime Minister. (It is actually officially designated as the residence of the First Lord of the Treasury, an office which has effectively been merged with that of Prime Minister since the beginning of Britain's modern parliamentary system, circa 1714.)
In the spring of 1941, Alistair Walsh and a British Army major were scouting Downing Street in order to plan an effective attack on 10 Downing Street on the day that Walsh was arrested. Walsh had reflected that the major was a good deal more conspicuous than would have been ideal for the assignment. However, it was Walsh who was arrested.
*=denotes a character who was a POV for a single scene
1=denotes a character who was a POV for one volume
2=denotes a character who was a POV for two volumes
3=denotes a character who was a POV for three volumes
4=denotes a character who was a POV for four volumes
5=denotes a character who was a POV for five volumes
6=denotes a character who was a POV for six volumes
† denotes a deceased character.