Why is this happening?

[RonnieBird]

Surely everywhere is connected by sea ?

[Wales-Bales]

Surely everywhere is connected by sea ?

I meant convenient routes, check the map, they are all next to each other

[RonnieBird]

I meant convenient routes, check the map, they are all next to each other

I already saw the map so I know where these places are. In fact there was a chap in the nineteenth century , ( Irish name but can't remember it off hand), who planned a set of free trade ports in all these places which would be linked.
You're quite right though that smuggling drugs into Scroteland is a piece of cake because you can land a boat at any one of hundreds of Orkney and Shetland islands without going through customs providing you arrive at night. After that you're in the UK and you can take it on anywhere you like.