How about:
mini yorkshire puds with beef and horseradish
slices of duck served on cucumber rounds with hoisin sauce
mini croustades (just use rounds of toast stamped out with a pastry cutter) with smoked salmon, beetroot and wasabi creme fraiche
mini quiches
cherry tomatoes with pesto and mozzarella (halve the tomatoes, fill with pesto, stick a cube of cheese to keep in the filling)
scallop and chorizo squewers (just a light cooked scallop with a chorizo slice on a cocktail stick)