The first jobs I ever did were Saturday jobs while I was at school, first in a greengrocer's shop and then in a bakery. In the course of these two jobs I learnt something significant about Christmas food shopping; no matter how early you open the shop on Christmas Eve there will always be people waiting outside for you to unlock the doors; and no matter how late you close, someone will always come along and try the door after you have locked up.
But as for the food itself, I don't really have any particular memories of childhood Christmas meals - we lived in Scotland until I was 7, where New Year was the bigger holiday. My food memories are much more recent, from the time when I was in charge of cooking Christmas dinner, sometimes for a dozen people or more. Everyone lends a hand, and if you're really smart you can delegate everrything, end up doing nothing at all yourself and taking all the credit. Christmas dinner was always the usual turkey, stuffing, roast potatoes, vegetables, gravy and cranberry sauce, followed by Christmas pudding (with sixpences of course, except that since we went decimal they have to be 5p pieces). And regardless of how much they had put away at lunchtime, everyone could find room later on for cheese, sausage rolls, fruit, chocolates and so on, but most especially my mother's mince pies. I always made Boxing Day dinner an antidote to the richness of Christmas dinner; poached salmon, boiled potatoes and salad, followed by ice cream.