Russ - If you check out the BHPA
list of clubs in the UK then you should find one fairly close to you. They will/should be able to sort you out with an instructor, or at least get you in the air for an 'experience flight' in a tandem.
I say 'should' because not many people, paragliding pilots included, are aware of the fact that wheelies can fly and Ive found that the ignorance means they may err on the side of caution and say that they cant do anything for you.
But they can!
Flyability is the disabled initiative of the BHPA and will help with the cost of learning to paraglide, and have 'buggy's' available to lend learner pilots (exactly the same as the one I am flying with in the pic I posted). Your local school can call flyability, ask for a buggy and take you flying.
Also
The Calvert Trust in keswick run a paragliding course in the summer each year, which is awesome and gets you qualified in a week with the help of Flyability and one of the best instructors/pilots in the world, Jocky Sanderson.
bdbpastx - Yeah, as with any sport there are dangers, but as with any sport you can choose to make it as dangerous or as safe as you want. Paragliding is very weather dependent, the wind is a major factor, too little and it isnt happening, too much and its close to lethal.
The closer you are to the ground, in strong winds, the more danger there is of the wind doing something crazy and slamming you into the ground. But to be honest its not a real consideration at all, as long as you fly within your limits and dont get the 'Im gonna show-off' bug then things will be fine.
Flying and soaring close to the hill or cliff is an awesome buzz, but obviously places another factor in the things-that-can-go-wrong equation.
Its an amazing sport, and actually very safe, if you want it to be, and at no point should you ever feel as if you are not in control.
The control is one of the things I love about it so much, being completely free and in control of moving in 3D so easily and effortlessly, no more cumbersome and awkard wheelchair maneuvers!