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.
Barmouth
Barmouth is a town and also area in the region of Gwynedd, north-western Wales, lying on the estuary of the River Mawddach as well as Cardigan Bay. Found in the Historic county of Merionethshire, the Welsh type of the name is originated from "Aber" (estuary) and the river's name, "Mawddach". The English type of the name is a corruption of the earlier Welsh form 'Abermawdd'. The town is offered by Barmouth train station. The town expanded around the shipbuilding industry, and a lot more recently as a seaside hotel. Remarkable buildings consist of the medieval Ty Gwyn tower house, the 19th century Ty Crwn roundhouse prison and St John's Church. William Wordsworth, a site visitor to Barmouth in the 19th century, explained it thus: "With a great sea sight in front, the mountains behind, the glorious estuary running 8 miles [13 kilometres] inland, and Cadair Idris within compass of a day's walk, Barmouth can always hold its own versus any competitor." Dinas Oleu (Citadel of Light), which lies east of the town on the adjoining hillside, was the first tract of land to be contributed to the National Depend on.