Secret War in Portugal [1939-1945]
For SOE [British Special Operation Executive] 24 Land was the code name for Portugal

Baker Street, 64

«On May 13th 2010 a small group of veterans, relatives, historians and friends gathered on the pavement outside 64 Baker Street.During WW2 this building had been the HQ of the Special Operations Executive - a new secret service which was formally brought into being on 22 July 1940 with the directive to: "co-ordinate all action by way of subversion and sabotage against the enemy overseas".Margaret Jackson MBE had worked there as the PA to Colin Gubbins, a major player and eventual Head of SOE and, nearly seventy years after SOE was established and then shortly afterwards started to use the building, she had been invited to unveil Westminster City Council's Green Plaque to commemorate these anniversaries.Duncan Sandys, the Lord Mayor of Westminster, introduced Margaret, who then gave a heartfelt and touching speech.» [source, here, with a documentary]