Eton mess cheesecake

Name: Eton mess cheesecake
Ingredients: 250g/9oz digestive biscuits, crushed; 100g/3½oz unsalted butter, melted, plus extra for greasing; 300ml/10fl oz double cream; 100g/3½oz icing sugar; 1 tbsp vanilla bean paste; 600g/1lb 5oz full-fat cream cheese; 18g/¾oz freeze-dried strawberry pieces; 200g/7oz strawberries, hulled; 15g/½oz icing sugar; 1 tsp lemon juice; 50g/1¾oz free-range egg whites; 100g/3½oz caster sugar; red food colouring; 15 strawberries; 100g/3½oz white chocolate, broken into pieces; 10 dehydrated strawberry slices, dusted with gold lustre dust (optional)