Stockholms Fallskärmsklubb (Stockholm’s Skydiving Club), skydive.se/en (last checked October 2021), offers tandem skydiving. After brief instructions the individual is hooked up to an experienced instructor and can skydive from a height of about 4000 meters.
Stockholms Fallskärmklubb (Stockholm’s Skydiving Club) has several instructors who have experience in skydiving with people with disabilities. Mention your disability when making an appointment. Those who are unable to control their legs are strapped to the instructor with an extra harness around the legs.
This tip is from 2007