If you ant it to be a black tie do then you need something special. How about smoked salmon parcels to start, made from smoked salmon wrapped some smoked salmon pate, with slices of lemon and a lettuce garnish.
Follow that with chicke breasts sauteed in butter with onion and mushrooms, with a dash of white wine and a chicken stock cube and add some cream at the end into the sauce. Serve with new potatoes and a mixture of Mange Tout and frozen or fresh peas.
Follow that with some strawberry ice cream, whip half a pint of double cream with a tin of condensed mik until it is thick, but not whipped. Make puree out of half a pound of strawberries with some sugar in a food processor and stir into the cream mixture, stick in the freezer in a plastic box - no need to break up ice crystals. Serve with a few sliced strawberries and some shorbread biscuits. (Xanthe Clay's recipe) - its easy!