Soak the fruit: Combine dried fruits, cherries, apricots, mixed peel, and brandy (or orange juice) in a bowl. Cover and let stand overnight at room temperature.
Preheat oven to 300°F (150°C). Grease a 9‑inch round cake pan and line with parchment.
Cream butter and brown sugar until light and fluffy (3–4 minutes).
Add eggs one at a time, beating well after each. Mix in orange zest.
Sift together flour, baking powder, baking soda, salt, cinnamon, nutmeg, cloves, and allspice.
Gradually add dry mixture to butter mixture, stirring just until combined.
Fold in soaked fruit mixture (including any liquid) and chopped nuts.
Transfer batter to prepared pan and smooth the top.
Bake for 1 hour 45 minutes – 2 hours, until a skewer comes out clean. If top browns too quickly, cover loosely with foil for last 30 minutes.
Cool in pan 15 minutes, then turn out onto a wire rack. While still warm, brush with brandy, rum, or orange juice.
Wrap completely cooled cake in parchment paper then foil, and store in an airtight container. Feed with 1–2 tablespoons of alcohol weekly for up to 3 months.