Obviously, those partners at Clifford Chance are earning far too much money (unlike their poor, overworked, underappreciated associates, apparently).
Tulkinghorn hears that a certain partner, who shall remain double-barrelled nameless, had to take the Range Rover into the garage because the air-con had broken. He received a call from the garage later that afternoon, and the conversation went something like this:
"I'm sorry, but we don't have any air-cons for that particular model in stock."
"Oh," replied the partner. "Just get me a new one then."
"No, sir," said the man at the garage. "I don't think you understand, we don't have any in stock."
"No," came the dry reply from the other end of the phone. "I meant a new Range Rover."