Pâte Sablée and Crème Pâtissière with Autumn raspberries

Autumn raspberries put to good use. Admittedly this is a bit of a faff, but the component parts can be made in advance, and assembled last minute. I have Leiths to thank for the recipes, having had a moment of remembering the most delicate biscuit I have made. Definitely worth the trip.
Pâte Sablée
285g plain flour
a …