In an unexpected development, with one man arrested and currently not charged:
Police hunting the killer of a Catholic policeman murdered in a car bomb in Northern Ireland arrested a 26-year-old man in Scotland after uncovering a major arms cache containing high explosives and Kalashnikov rifles.
The arrest of the unnamed man - who was said to have been living near Loch Lomond for several months - raises (my emphasis) the possibility that dissident republicans could have been using Scotland as a base to plan their attacks.
In the past both Loyalist and Republicans IIRC had a presence in Scotland, not the dissidents though.

I shall watch to see what develops.

Link:http://www.scotsman.com/news/Scots-t...der.6747349.jp