Historical clue formulations

• Royal stand-in — 2019-06-14
• University official — 2018-10-02
• Acting monarch — 2015-08-09
• University V.I.P. — 2010-07-04
• University officer — 2005-03-18
• Substitute scepter-wielder — 2000-12-09
• Ruler — 2000-06-10
• Substitute ruler — 2000-03-31
• College leader — 2000-01-07
• Governor — 1999-06-12
• Shopping street in London's West End — 1997-05-18
• University official — 1997-05-17
• Sovereign's stand-in — 1997-03-29