Got there in the end. Instead of making a fully home-made tart I went to buy an uncooked pastry at the local supermarket, for this recipe to appeal to busy households. Quince glazing optional, can be replaced with something else.
I chose a picture of plums picked a year ago in a Wimbledon garden to make a background image for this blog. Here is the original photo and a quick description of the recipe I used to make jam with them.