Why don't you do a large joint of lamb - just roast it? Or some racks of lamb. I've got a dead easy posh green sauce to have with it too - it's delicious. It's got anchovies and loads of garlic and herbs. Serve with some pots (dauphinoise etc) and green beans. Or roasted veg and couscous.
Dizzy Dixies recipe on here for white chocolate cheesecake is a winner. Easy and really tasty.
I'd probably just do some mackerel pate and some other nibbly bits to start.
thanks for the input so far. I'm thinking of stearing away from the mixed grill in favour of something easier / quicker to prepare in advance.
I've been through my recipies and have so far chosen:-
STARTERS - Crispy cocanut tiger rawns - pork satays with peanut sauce - roasted asparagus with basil and lemon butter
MAINS - slow roasted duck in red wine and orange sauce with potato and spinach puffs (although I've never wisked an egg white before!?!?!) - Lamb boulangere - rack of lamb with pine nut and parmesan crust and garlic and rosemary rosted vegtables - or something else
PUDDINGS -molten chocolate & raspberyy pots - dark and white chocolate shots - fruit & nutmeg crumble
I'm not sure if the puddings will be too heavy after a lamb or duck dish - and I've never cooked duck before either but I know it can be quite smokey!
Pommes dauphinoise is incredibly easy to do, however it tastes so delicious your guests will think you are a culinary genius.
A very easy but nice thing to go with are pork chops, cover with a teaspoon of onion marmalade (out of a jar, English Provender Co for choice), then a few slices of rocquefort. Grill the pork chops first and then top them with this and put under grill for 5 mins or so. Easy peasy.
I can never be arsed with starters. I do a very nice mixed board with pate, serrano ham, olives, houmous, taramasalata sometimes, nice breads and grissini. If you do do a starter, don't bother with anything that needs to be cooked. If you can do something cold (which can be partially prepared before your guests get there) it will be unimaginably easier.
Pudding wise, in summer I like chocolate pavlova (make a meringue base, cover with whipped cream, melt some very nice dark chocolate and drizzle over, it sets hard and glossy). Also Baked Alaska is very impressive and 'oooh' looking, and is certainly not as difficult as you would believe.
Or, baked peaches - baked peaches in oven with vanilla sugar, serve with nice shop bouight vanilla ice cream and a raspberry coulis (blend together some raspberries, which can be frozen if you can't find fresh ones, some water and icing sugar to taste. You do need to sieve it to get rid of seeds etc.)