It is safe to freeze them as long as you always defrost thoroughly in the fridge before eating and never re-freeze once thawed. However freezing does reduce the quality of most cooked meats so we do advise against it.

Always store in a refrigerator below 5°c
Cooked Meats are extremely perishable and should always be eaten as fresh as possible.

Yes - if there is a re-heating instruction on the pack - be careful not to overcook as cooked meats can dry out easily

Never exceed the use by date, eat as soon as possible after opening and always within 2 days.

The pack may tell you the country of origin of the meat, you can also find where the product was manufactured as it will be marked with a health mark which looks like - UK KM 007 EC usually inside an oval stamp. The list of manufacturers can be found at www.food.gov.uk/foodindustry/meat/meatplantsprems/meatplants