Possible Clues:

• £1000's no obstacle for self-appointed expert
• So-called expert giving king no problem in the long run
• One with omniscience
• One supposedly omniscient
• Person who behaves like encyclopedia 94-3)
• Boastful person who behaves like repository of information
• Clever clogs is King of Berlin since 1989?
• Hill outside Washington one's unlikely to pass
• Smart Alec close to desk describing open-plan office?
• One who thinks they have all the answers