We have a small cooked breakfast rather than a full English as we have canapes at lunchtime and an early dinner at 6pm eg eggs benedict, pancakes, French toast, scrambled eggs and smoked salmon, whatever we feel like that year, with a fresh fruit salad.
We entertain on Boxing Day and our tradition is roast beef and Yorkshire puddings. Christmas Eve is a baked ham and raclette.
We then have a buffet of the cold meats, canapes (I make extra and freeze), the leftovers from the cheese board, puddings (trifle, Yule log, mince pies, Christmas pudding, cookies and cake) with salad and fresh fruit for lunch every day until New Year. Dinner on those days are things that I have made ahead and frozen eg bouef bourguignon, shepherds pie, coq au vin. I don't do any cooking other than taking things out of the fridge or freezer and putting them in the oven or on a plate for the rest of the year!
It might seem a bit much but our office is closed for that period and it is the only time of the year everyone is home together for a whole week and not working/studying. In normal years, we have guests and family popping in most days but in a relaxed informal way, not like Christmas itself.