Possible Clues:

• From Savoy comes the lord of everything else that's high
• A hobo surprisingly admitted by pressure on hospital official
• 'The Mikado' character
• Role in The Mikado
• Bear to begin to be Lord High Everything Else
• Bear only odd parts of brash, pompous official
• Composer's caught out by ursine philosopher, Gilbert character
• Winnie finds degree hard for a multi-tasker
• Self-important official
• Pompous official almost to despise in spring uprising