Warrant Officers are not responsible for troops or personnel. But, in referring to a Warrant Officer, face to face you would address him as "Sir" as any other officer. If you work with him or are more familiar, he may permit you to refer to him as "Chief." If referring to a Warrant Officer in a conversation with a third party, you would refer to him as "Warrant Officer __________."
The proper way address them is Mr. or Mrs Last Name
WO2 (Warrant Officer 2nd Grade) - WO1 (Warrant Officer 1st Grade) - CWO (Chief Warrant Officer).
John Downey - RAF Officer - died in 2010.
John Downey - RAF Officer - was born in 1920.
John Day - RAF officer - was born in 1947.
Jack Harrison - RAF officer - was born in 1912.
Jack Harrison - RAF officer - died in 2010.
George Mills - RAF officer - died in 1971.
George Mills - RAF officer - was born in 1902.
Joe Hardstaff - RAF officer - was born in 1935.
George Barclay - RAF officer - was born in 1920.