Possible Clues:

• Collective noun for senior ministers? A pudding!
• Storage cupboard
• Furniture item or collective government ministers
• Taxi I catch with group going for meeting at 10?
• Governing, just in case
• Bureau used by government ministers
• Piece of furniture I secure on back of vehicle
• Politicians coming out of the cupboard
• The case for getting top politicians together
• I can't be removed from advisory committee