According to the most detailed plans created for the immediate post-invasion administration, Great Britain and Ireland were to be divided into six military-economic commands, with headquarters in London, Birmingham, Newcastle, Liverpool, Glasgow and Dublin. Hitler decreed that Blenheim Palace, the ancestral home of Winston Churchill, was to serve as the overall headquarters of the German occupation military government. The OKW, RSHA, and Foreign Ministry compiled lists of those they thought could be trusted to form a new German-friendly government along the lines of the one in occupied Norway. The list was headed by British fascist leader Oswald Mosley. The RSHA also felt that Harold Nicolson might prove useful in this role. It appears, based on the German police plans, that the occupation was to be only temporary, as detailed provisions for the post-occupation period are mentioned.