Possible Clues:

• Roman novel in 1 down - for the most part accommodating members of the establishment perhaps in the country
• Choice of a chess piece or a Monopoly piece?
• Chess piece/Monopoly piece choice?
• Underground station in north London on Piccadilly Line
• Fashion sound underwear, to cover upper-class lord's seat
• Home belonging to a nobleman
• That's himself or where he lives - that's grand