Louise,
You're welcome but I now think that you may be talking about "English Pasties". They have the ingredients that you mention. The pastry is rolled out and the ingredients are put in the middle and then it is sort of folded up and sealed (pinched). It makes it's own juice of sorts while it is baking. I'm sure there are posts for this in "clippings". I've never made them but I've eaten them made by my Grandmother and Great-Aunt. They are very delicious! Hope this is of further help.