Does cooked ham contain lactose?
Often yes. Many industrial cooked hams list lactose among their ingredients: it works as a carrier for flavourings and preservatives, not because there is milk in the meat. It is not a rule — there are cooked hams whose ingredient list is just pork leg, water, salt and flavourings — but it is common enough that you cannot take it for granted.
Eating out
At a supermarket deli counter you can ask to read the label on the whole piece: allergens are in bold by law. In a sandwich or on a charcuterie board at a restaurant, almost nobody knows the brand.
And how did it go at the restaurant?
Knowing what is in a dish is half the answer. The other half is what actually happened to the people who ate it in a specific place — and that is what SafeBelly collects: no stars, just how it went afterwards.
Open the map and see who has been there