Apple and Lemon Tart

I am doing another charity cake sale at work, and I thought I'd celebrate the British apple this time, so I had to make my Apple and Lemon tart.  I don't know why I haven't put it on here before - it is so delicious and simple and doesn't require the pastry to be blind-baked.  You line a 10" loose-bottomed flan case (metal) with some good sweet shortcrust - bought is fine, but I just knocked some up in the processor with 200g plain flour 100g butter and a tablespoon of icing sugar, bound with an egg yolk and water.  Now, peel and grate two large Cox's apples (British please!) and add to the juice and zest of two lemons, 2 eggs, 4 tablespoons caster sugar and 120ml of double cream.  Mix well, pour into the pie crust and bake at 170C for 40 minutes.  It is like a Tarte au Citron but with the freshness and texture of apple .  It is very nice indeed!  One tip: it looks a bit like a quiche, so a heavy drenching with icing sugar just before serving helps.