In typical office policy, the hope is they might just resign so they don't collect further benefits.
In "A Christmas Story from MI5," the video shows various agents at their computers at the spy agency's London headquarters, Thames House (not Regent's Park, as depicted in the TV series), while Oldman narrates in the voice of Jackson[...]
MI5 Archives
A new book is claiming that the real life inspiration of the character of M specifically targeted orphans to be spies.
The book, Henry Hemming's Maxwell Knight: MI5's Greatest Spymaster, tells how Knight felt that being orphaned at a young age would create a sense of loyalty to the agency and they would end up seeing their spymaster as[...]