Yes, I braved it back to the allotment plot 144 and dug up a few parsnips for Christmas Day. As advised by the kind lady from Green Lane Allotments, as long as I left them muddy they will store well, so I have put them in this old mushroom crate and into the store room by the garage.
So thank you GLA for your sound advice - with another cold snap predicted I would have a hard job digging them out of solid icy ground!!
If I don't blog again *MERRY CHRISTMAS & A HAPPY NEW YEAR* to you all.