Fire engine cake

Name: Fire engine cake
Prep time: 2 h
Cook time: 40 min
Total time: 2 h 40 min
Cuisine: American
Ingredients: 250g butter , softened; 250g caster sugar; 4 large eggs; 1 tsp almond extract (if you have a nut allergy, use vanilla extract instead); 200g self-raising flour; 50g ground almond (if you have a nut allergy, use 50g plain flour instead); 2 tbsp milk; 150g butter , softened; 300g icing sugar , sieved; 500g ready-to-roll icing , coloured red; 250g ready-to-roll icing , coloured grey; 200g royal icing , made from packet royal icing sugar (use 200g sugar); red food colouring; 4 liquorice Catherine wheels; 25g white ready-to-roll icing; 2 iced party ring biscuits; 25g ready-to-roll icing , coloured yellow; 8-10 chocolate coated biscuit sticks (e.g Mikado) or mint sticks (e.g Matchmakers); 6 dolly mixture sweets; blue food colouring; black food colouring; Lego firemen (optional)