http://www.bbc.com/news/health-35065905

" All those on the trial have relapsing remitting MS, where patients experience attacks - or relapses - followed by periods of remission.

The treatment involves intensive chemotherapy, so patients are warned that there are side-effects such as nausea and hair loss.

Paul Kirkham, another MS patient, said he was glad to have had the transplant but added: "It does knock you. I'd rather have done 10 rounds with Mike Tyson."

The transplant involves a one-off cost of around £30,000, which is comparable to the yearly cost of some MS treatments. "