Flightglobal archive from 1971 has some information.
http://https://www.flightglob...0-%200615.html
"The Olympus is an essentially simple two-spool afterburning turbojet located behind a sophisticated variablegeometry intake, designed and built by BAC, which has overall powerplant responsibility and builds the nacelles. The engine has to accept intake temperatures of more than 120°C during Mach 2 cruise, so extensive use of titanium is made at the front end of the compressor for better creep resistance."