NHS surgeon who had his legs removed to satisfy sexual interest is jailed for fraud.
(www.theguardian.com)
Also, it looks like "old mutual health" was recently re-branded to "ReAssure" in the UK, so that would be who to look up for what type of insurance they would provide. It does sound like they were life insurance, or "life assurance" as they called it. Sounds very much like disability insurance would be under their umbrella.