Possible Clues:

• Put at risk a London college if Academician enters
• Jeopardise position at head of averages, failing in August
• Expose drive to circumscribe Royal Institution
• Like Caesar without a hazard
• Problem with prime I left to hazard
• Sovereign ignoring anarchist leader is put at risk
• Sovereign's not a risk
• Sovereign, dismissing army leader, is put in danger
• Put in danger rascal returning old Italian currency
• Devil in hospital is mostly sick of risk