Damo's Chicken Pies

1kg Chicken
2Tbs butter
1 cup onion
1 cup carrot
1 cup celery
6 Tbs flour
2 cloves garlic
2 Tbs parsley
1 Tbs Thyme
3 cups chicken stock
1 cup peas
salt/pepper
1/2 cup cream
Shortcrust pastry