You have to weigh up the risk and reward. But consider, It is often more than confiscation that you risk. and while you won't get locked up for a few Lincolnshire sausages, they can be awkward and keep you hours at the port while interviews are done and reports made. They won't care that your ship is sailing or train departing. All for something you can buy at the port within a mile from the docks.
I became an accidental international drug smuggler.
(I bought in 2 cartons of cigarettes for a mate. however they gave 2 x 500 cigarettes cartons, not 2 x 100 cigarettes cartons)
As I found out, once your card is marked, it's marked.
If I ever get caught tobacco smuggling again, it wont be a confiscation and wave through next time.