Tuna and sweetcorn pasties

2 x 198g cans tuna steaks in brine
198g can sweetcorn,drained
350g pot four cheese sauce
500g ready to roll shortcrust pastry
flour,for rolling
1 med egg,beaten

Preheat the oven to 200c/180c fan/gas 6.Line two baking trays with baking paper.Drain tuna and mix with the corn and one third of the cheese sauce.Season with pepper.Roll out pastry on a lightly floured surface to the thickness of a 2p coin.Cut out 11cm rounds.Re-roll the pastry trimmings and cut out more rounds.Brush one round with the egg.Put 1 heaped tsp of the tuna mixture in the middle.Fold over the pastry to make a turnover and press the edges together to seal.Repeat until all the tuna is used up.Put on the baking trays and brush with egg.Bake for 20-25 mins until golden.