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.
Killin
Killin is a town located at the western head of Loch Tay in Stirling (previously Perthshire), Scotland. The west end of the village is magnificently sited around the breathtaking Falls of Dochart, the primary street leading down towards the Loch at the convergence of the rivers Dochart and Lochay. The falls are crossed by a slim, multi-arched stone bridge carrying the major A827 road into Killin. Killin railway station was on the Killin Railway. The train station was formally closed on 1 November 1965. Killin has a tiny primary school with 56 students. For secondary education pupils take a trip to Callander 21 miles (34 kilometres) to the south. The closest Gaelic tool primary is in Stirling, 37 miles (60 kilometres) to the south.