Possible Clues:

• Standard charge initially preceding interior design
• London theatre's cornier production, containing sex
• By which to judge the theatre?
• Reference point for a London theatre
• The standard set by London theatre
• Standard set by London theatre
• Sounds as if one might cry with a tear, Ian, in standard fashion
• Religious observance and instruction held in Conservative rule
• Conran's first interior design standard
• Standard note covering disorderly interior