Related Clues:
- Big traffic congestion backing-up to Oregon
- Important officer
- Key officer
- British Prime Minister (1990-97)
- See 1 Down
- Not minor
- Conservative PM
- Of a geological or historical age
- Half of street cut off by obstruction, turning serious
- Chief officer, accountant to leave island
- To get through when recalled by prince is of major importance
- Military officer
- Historic
- Officer in difficult situation turned to other ranks
- John --, ex-PM