Preheat the oven to 160C/320F/Gas 3. Grease a deep, 23cm/9in round cake tin with butter, then line the base and sides with a double layer of baking parchment.
In a bowl, gently mix together the cherries, pineapple, apricots, almonds, lemon zest and sultanas until well combined. Set aside.
In a food processor, cream the butter and sugar until light and fluffy. Pour in the beaten eggs a little at a time, adding a spoonful of the flour to prevent the mixture from curdling and pulsing after each addition.
Carefully fold the remaining flour and ground almonds into the cake mixture using a metal spoon, then gently fold in the fruit and nut mixture until just combined.
Pour the cake mixture into the prepared tin and smooth the surface using a palette knife.
For the topping, decorate the cake with the blanched whole almonds, walnut halves, glacÃ© cherry halves and orange peel.
Bake the cake in the oven for 2-2Â¼ hours, or until golden-brown on top and cooked through. (The cake is cooked through when a skewer inserted into the centre of the cake comes out clean.) Cover the cake loosely with aluminium foil after one hour to prevent the top from becoming too dark.
Set the cake aside in its tin to cool for 30 minutes, then remove from the tin, peel the baking parchment away from the sides and place onto a wire rack to cool completely.
Meanwhile, heat the apricot jam in a small pan over a low heat, then strain through a fine sieve to remove any pieces of fruit. When the cake has cooled, brush the top all over with the warm apricot jam. Wrap a ribbon around the cake and tie with a bow, if desired, then serve.