I am cooking for 10. I cheat a bit, not a huge fan of cooking really. I also have a large double oven (one fan, one not). I will cook the turkey (crown) in the fan oven, but move to the other oven halfway through, so other things can go in the fan oven (Pigs in Blankets, Stuffing, Potatoes, Parsnips, Yorkshires).
I will peel all veg the day before (potatoes, carrots, parsnips) and leave in water over night. Roast potatoes can be made well in advance and frozen, same for parsnips. Then just reheated on the day. According to my DH they taste better this way. I'm not doing that this Christmas, but have in the past. Just don't overcook them the first time. Always par-boil potatoes and fluff them up a bit in the colander before roasting (makes them more crispy!).
Yorkshire puddings come ready made from the supermarket and take 4 minutes (I am lazy). And I am only doing these as a couple of guests have requested.
Broccoli is steamed over the carrots.
I give sprouts a miss. Disgusting little things.
Pigs in Blankets/Stuffing, comes ready to bung in the oven.
Gravy (this year) is courtesy of M&S - and comes in a tub (x 2).
Bread sauce (only a couple of people like this revolting stuff) comes from a packet mix.
Cranberry comes from a jar (again only a couple of people like this).
Interesting how everyone cooks different things! There will be no red cabbage or cauliflower cheese for us for Christmas - but love both of them!
I work back from what time I'd like us to eat. And write a list of timings. Dishing up is always the problem, especially for lots of people. Warm plates are important, and I use the non-fan oven to warm plates and keep food warm once turkey is properly cooked. Putting food on table for people to serve themselves can work, but depends if people are going to hog all the best things, and is also time consuming if lots of people.
Christmas pudding is microwaveable!