Heljan A/S is a Danish model railway company based in Søndersø. Originally specialising in decorations and accessories for model railways, it has now also developed a substantial range of rolling stock. It has diversified into modelling the British scene, and since 2002 have released several OO gauge diesel locomotives, and several O gauge models.
British Outline now forms the biggest part of the Heljan business and UK operations are run from Denmark through an agent. In line with other model train companies and to keep costs to a minimum models are manufactured in China.