. "University of Oxford"@en . . "British"@en . . . "Sir Patrick Jeremy Walker, KCB was director general (DG) of MI5, the United Kingdom's internal security service, from 1988 to 1992."@en . . . . . . . . "1988"^^ . . . . . . . . . "1963"^^ . . . . . "Patrick Walker (MI5 officer)"@en . "Intelligence officer, Civil servant"@en . "Sir Patrick Walker"@en . "Sir Patrick Jeremy Walker, KCB was director general (DG) of MI5, the United Kingdom's internal security service, from 1988 to 1992."@en .