Caramelised white chocolate fridge cake

Name: Caramelised white chocolate fridge cake
Ingredients: 50g butter, plus extra for the tin; 400g blonde white chocolate (or if you can’t find it, use 500g regular white chocolate in total), broken into pieces; 100g white chocolate, broken into pieces; 2 tbsp double cream; 150g mixed dried fruit; 150g rich tea biscuits, roughly broken up into pieces; 150g glacé cherries, halved; 50g rice pops; 50g milk chocolate; bright red and green sweets and gold sugared almonds, to decorate (optional)