Chocolate and orange celebration cake

Name: Chocolate and orange celebration cake
Ingredients: 275g/9¾oz plain flour; 3 tbsp cocoa powder; 1½ tsp bicarbonate of soda; 1½ tsp baking powder; 150g/5½oz golden caster sugar; 65g/2¼oz soft brown sugar; 1 orange, zest only, finely grated; 25g/1oz ground almonds; 3 large free-range eggs; 225ml/8fl oz coconut oil, melted and slightly cooled; 225ml/8fl oz whole milk; 3 tbsp golden syrup; 115g/4oz self-raising flour; 1 tsp baking powder; 115g/4oz soft unsalted butter; 115g/4oz golden caster sugar, plus 2 tbsp for the syrup; 2 large free-range eggs; 1 orange, finely grated zest and juice; 10 cardamom pods, seeds only, crushed; 300ml/10½fl oz double cream; 200g/7oz orange and almond dark chocolate; 200g/7oz plain chocolate; 500g/1lb 2oz dark chocolate; 225g/8oz unsalted butter; 50g/1¾oz white chocolate, melted; toasted flaked almonds