I would suggest if you are looking to do that to travel from Scotland to the north and drive through (rather than travel to the south directly). It will all be pretty unenforceable "advice" then which you can simply ignore.Damm and I was hoping to get over to Malin head diving soon.
You know just about the most Northen part of the island - to the North of Northen Ireland in Southern Ireland!
The downside is that there is nothing open in Donegal!
That said they've shut everything down here in Derry too...