This will depend on the issue. However, many plumbers are also Gas Safe Registered, meaning they can undertake work on all aspects of boilers and central heating systems. It's best to look out for plumbers that display the badge of your boiler on their literature.
Arisaig
Arisaig is a town in Lochaber, Inverness-shire, on the west coastline of the Scottish Highlands, within the Rough Bounds. It is also the conventional name for the part of the surrounding peninsula south of Loch Morar prolonging as far eastern as Moidart. The word Arisaig implies "the refuge" in the Scottish Gaelic language. Arisaig is in the Scottish council location of Highland. It has a population of about 300.