Doctors in Sheffield say patients with multiple sclerosis (MS) are showing "remarkable" improvements after receiving a treatment usually associated with cancer.

Steven Storey was diagnosed with MS in 2013 and within a year went from being an able-bodied athlete to needing a wheelchair and losing sensation in much of his body.

He said: "I went from running marathons to needing 24-hour acute care. At one point I couldn't even hold a spoon and feed myself."

Within a few days of the transplant he was able to move his toes, and after four months could stand unaided.

He still needs to use a wheelchair but can manage short distances without any support.

Steven, who is continuing to undergo physiotherapy said: "I can swim and cycle and hopefully walking is the next big step".

The BBC's medical correspondent Fergus Walsh reports.

Panorama: Can You Stop My Multiple Sclerosis? Monday 11 January, 8.30pm, BBC One.