Heat oil in pan and gently sauté leeks until just soft, add fennel and cook for further 5-8 minutes.
Stir in juice and rind of lemon, then leaves from the thyme and the wine, bring to boil and then simmer for 2-3 mins.
Add the turkey and crème fraiche, stir well and allow to cool.
Preheat oven to 220ºC (200ºC fan assisted)/ 425ºF/Gas 7.
Place cooled filling in a pie dish, roll out pastry large enough to cover the dish with some to spare.
Trim strips from the edge of the pastry approx. 2 cm/1” wide, brush dish rim with beaten egg and place pastry strips on top to form a pastry rim.
Brush rim with beaten egg, carefully place large piece of pastry over dish, press edges together firmly and trim off excess with a sharp knife.
Knock up edges and flute if desired, make a small hole in centre of lid to allow steam to escape.
Brush with beaten egg and sprinkle with flaked almonds, bake for 25 minutes until pastry risen and golden.
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