Complex sentence: Built by the Wilkinson Sword company in the run up to the First World War the first'Wilkinsons' were aimed at military use and optional accessories included a sidecar complete with Maxim machine gun-and a steering wheel instead of handlebars.
Split into simpler sentences: Built by the Wilkinson Sword company before the First World War the first'Wilkinsons' were aimed at military use. Optional accessories included a sidecar complete with Maxim machine gun, and a steering wheel instead of handlebars.