Party cheesecake with mango and passion fruit salsa

Name: Party cheesecake with mango and passion fruit salsa
Ingredients: 100g/3½oz butter, melted, plus extra for greasing; 200g/7oz digestive biscuits, finely crushed; 700g/1lb 9oz full-fat cream cheese; 125g/4½oz caster sugar; 1 tbsp plain flour; 2 tsp vanilla extract; ½ lemon, zest and juice; 2 free-range eggs, beaten; 150g/5½oz soured cream; 2 passion fruit, halved and pulp and seeds scooped out; 350g/12oz mango, peeled and flesh cut into small cubes (prepared weight); ½ lime, juice only; 2 tbsp icing sugar