Currently have about 100 bottles of red in the shed outside, nothing special, mostly 2-3-4-5 Euro bottles from the last booze cruise. It's bloody freezing out there - are they coming to any harm?
The wine maker has probably already been killed them with Sulphur (screw caps, plastic corks, thin glass bottles are indicators) so they are not going to develop in flavour and, unless it drops well below -10 degC, they are unlikely to freeze either.