Crush the digestives in a freezer bag until they resemble breadcrumbs.

Melt the butter in a saucepan and then remove from heat. Alternatively melt in a microwavable bowl for 30-45 seconds in the microwave until JUST completely melted.

Add the crushed biscuits and mix so that they are completely covered with the melted butter

Mix the cream cheese, icing sugar and vanilla extract in a bowl until well combined.

Whisk the cream in a separate bowl until peaks are forming and then fold together with the cheese mix until well combined.

Completely crush two of the flakes until they are almost like dust and fold into the cream/cream cheese mix. Break up the other two flakes into random bits and, again, fold into the creamy mix.

Spoon the whole mix over the biscuit base and spread evenly over using the back of a spoon.