Possible Clues:

• Workman who fixes glazed rectangles in bathrooms
• Tradesman who covers roofs or bathroom walls with rectangular materials
• Roof worker being fired again retires
• Farmer half-heartedly becomes doorkeeper at lodge
• Novice in row with ceramic worker
• Top man in building trade left during a row
• Thatcher's rival for top job?
• Mosaic repairer
• Bathroom renovator
• Certain floor specialist