The route the heritage trains run today was originally the Slamannan and Borrowstounness Railway, an 1840s line that became part of the North British Railway and spent more than a century hauling coal and pit props down to the harbour at Bo'ness. When the coal industry collapsed in the 20th century, the line went with it. The Scottish Railway Preservation Society acquired the derelict trackbed in 1979 and rebuilt it - track, signals, stations - largely with volunteer labour. The first passenger services ran in 1981 and the line has been running ever since. The four stations - Bo'ness, Kinneil Halt, Birkhill, Manuel - all sit close to the original Victorian alignment.

Most of the locomotives at Bo'ness had industrial careers, not glamorous mainline ones. They worked at Scottish ironworks, collieries, gasworks - small saddle tanks like Lord Roberts of the Coltness Iron Company, built for shunting wagons around a yard rather than racing the Flying Scotsman. A few mainline veterans are also in service, including LNER class D49 No. 246 Morayshire and BR Standard Class 4 No. 80105, both restored to operational condition. The mix gives Bo'ness an authentic Scottish flavour that bigger heritage lines sometimes lack: this is not the railway of expresses and prestige, but the railway that actually moved coal and pig iron through the Forth Valley.

Across the line from Bo'ness station sits the Museum of Scottish Railways, the national collection. Inside are locomotives, carriages, signalling equipment, and the kind of detail that train enthusiasts travel a long way to see. Entry is paid separately from the railway itself. Nearby, in two disused Norwegian Railway coaches, the Bo'ness Gauge O Group runs a model railway that operates alongside the full-size line between Easter and December. One coach is the viewing space, open to visitors. The other is the fiddle yard where staff sort the model trains out of sight. Donations are accepted; admission is free. In 2024 the model railway was damaged in what police treated as a deliberate fire, and the volunteers rebuilt it.

Heritage railways are sometimes dismissed as nostalgia projects, but Bo'ness functions as something more practical: a working museum where the machines run, where the skills required to maintain Victorian steam technology continue to exist, and where children whose parents never saw a steam locomotive can see one breathing today. The SRPS is a registered charity. Every season the volunteers fire boilers, sell tickets, polish brass fittings, and explain to visitors what an injector is and why it matters. Five miles of track is not much by railway standards. But every yard of it is a small refusal to let Scottish railway history fall completely silent.