James Fisher & Sons, a service provider in all sectors of the marine industry and a specialist supplier of engineering services to the nuclear industry in the UK and abroad, was founded in Barrow in 1847. It is listed on the London Stock Exchange and is the largest company to have its headquarters in Cumbria. Annual revenue stood at £307 million in 2012 (up 15% from £268 million in 2011), as well as staff numbers standing at over 1,500 worldwide, with 120 of those in the Barrow headquarters. Numerous vessels are registered at the Port of Barrow, with the majority being owned by James Fisher & Sons and International Nuclear Services/Pacific Nuclear Transport Limited.