Related Clues:

• London's Wellington ____
• Cube face
• Right-angled; plaza
• Like most crossword diagrams
• Not in shape
• Chess board unit
• Diamond found in coach parked by hotel within memory
• Greek character on passenger vehicle carrying minute figure
• Space for a bishop in the town centre
• Greek character recalled problem about British diamond
• Shape with four equal sides
• Conservative's 'question and answer' tour's ending in the Home Counties
• Old fogey, eighty-one perhaps?
• A number r in relation to p such that r multiplied by itself equals p?
• A quadrilateral with sides of the same length