The company behind the Airlander "flying bum" is planning to IPO in London

Hybrid Air Vehicles, the maker of the Airlander hybrid aircraft nicknamed the flying bum for its appearance, will seek to raise £50m with a float pencilled in for the end of 2017 or early 2018 on London's Alternative Investment Market.

HAV is currently on the hunt for an advisor and will also seek to raise around £30m in debt financing around the same time, although it could come before or after the IPO.

http://www.cityam.com/257097/company-behind-airlander-flying-bum-planning-ipo-london