Possible Clues:

• Colder even than 31 Across
• More aloof outside the Channel Islands - that's right
• One centigrade? That's right -- or even more freezing
• Slicker
• Here in France Her Majesty appears more frigid
• One apple drink lacking depth is rather cold
• Relatively remote
• More slippery circuit oddly omitted with some hesitation
• More cold - really freezing
• More glacial