paragliding
I am a 500hr PPL pilot who took up Paragliding some years ago and have now stopped!! I did a course in UK, France and Nepal. I loved the concept of paragliding and had some good times but reached a stage where I had to invest in my own kit and decided that I didnt like it that much to spend $3000 which I would rather spend flying an aircraft. The bottom line is that if you are UK based then your flying time is limited and it is going to takie some time to fly competently. There has to be less than 10knots of wind to learn! Also unless you have friends who paraglide with you, it is a pretty anti social sport. Not much fun watching other people paragliding! Far better to take them up in an aircraft with you. It is a great sport though but be aware like all '"éxtreme'' sports-it is dangerous. Get the landing or take off wrong or the wind changes and you will know about it.
Let me know how you get on!