Colonel Ross
Colonel H. L. Ross is a fictional character from the series of novels by Len Deighton variously described as the "Secret File" or "Unnamed hero" novels. His first names are not revealed.
Ross is a senior officer in British military intelligence running a War Office security department from his office off Whitehall in central London. The character is introduced in The IPCRESS File, leading efforts to recover a missing scientists and ultimately expose a traitor in British intelligence.
Ross is portrayed by Guy Doleman in the 1960s "Harry Palmer" films The Ipcress File, Funeral in Berlin and Billion Dollar Brain.