Possible Clues:

• Low item of furniture
• Settles on sack after lifting small item of furniture
• St John's Smith Square is known as 'Queen Anne's —'
• Sitter’s rest
• Furniture item that pays for plane, perhaps?
• Pays stooge for somewhere to put a pin up
• Pays for implement to make furniture
• Ottoman pays the bill for 20 down, for example
• Low-down supporter, puppet of an old Labour leader?
• Down-at-heel travel agent perhaps on small plane with one of the Ottomans