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.
Brora
Brora is a town in the east of Sutherland, in the Highland location of Scotland. Brora is a tiny commercial village, contending one-time a coal pit, boat building, salt pans, fish treating, lemonade factory, the new Clynelish Distillery (in addition to the old Clynelish distillery which is currently called the Brora distillery, wool mill, bricks and also a stone quarry. The white sandstone in the Clynelish quarry comes from the Brora Formation, of the Callovian and Oxfordian phases (formerly Middle Oolite) of the Mid-Late Jurassic. Stone from the quarry was used in the building of London Bridge, Liverpool Cathedral and Dunrobin Castle. When in operation, the coalmine was the most northern coalmine in the UK. Brora was the starting point in the north of Scotland to have power thanks to its wool sector. This difference generated the neighborhood nickname of "Electric City" at the time. Brora likewise houses a baronial design clock tower which is a battle memorial.