Quite a few turbine Helicycles flying with good reports. They are assembled under the home-built category , not all that expensive (for a helicopter) , the biggest drawback for the average person is often the training costs. If you have your rating you are well on your way.
I believe there are some flying in the UK.
Google "Helicycle Hatchery" for a detailed build from first component delivery to first flight . Lots of pictures and details.