Possible Clues:

• More work for adults covered by posh headgear
• More would have us believe this is the perfect place
• Sir Thomas More's perfect place
• Land of milk and honey
• Wonderful place of limited interest to G&S
• You and I need only a pot to make the place perfect
• More work here?
• Social gathering for PM
• 'Classy' and 'supreme' reflected first class place
• Is it limited to Gilbert and Sullivan to be so perfect?