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.
Isle Of Scalpay
Scalpay is an island in the Outer Hebrides of Scotland. Scalpay is around 4 kilometres (2.5 miles) long and rises to a height of 104 metres (341 feet) at Beinn Scorabhaig. The area of Scalpay is 653 hectares (2.52 sq mi). The primary settlement on the island is at the north, near the bridge, clustered around An Acairseid a Tuath (North Harbour). The island is peppered with little lochans. The largest of these is Loch an Duin (Loch of the Ft) which has a tiny island in it, with the remains of the fort still noticeable. Eilean Glas, a tiny peninsula on Scalpay's eastern shore, is home to the very first lighthouse to be integrated in the Outer Hebrides. Scalpay's local neighbour, Harris, is simply 300 metres (980 feet) away across the narrows of Caolas Scalpaigh. In 1997, a bridge from Harris to Scalpay was developed, replacing a ferry solution. In 2001, the island had 322 people, whose primary employment was fish farming and prawn angling. By 2011 the population had declined by 9% to 291 whilst during the very same duration Scottish island populations overall grew by 4% to 103,702.