Безопасен ли staysure.co.uk?

Mama always tells me, avoid such companies in any case, don’t deal with banks and insurance companies. Probably, this was an exception, in her words, LOL. Staysure is the insurance that you can be sure of, which helps you in any kind of situation. The thing is I wasn’t the real user of their service, rather my sister used it, when she came to visit us. There was some sort of problem with her leg and she needed an urgent hospital visit. Contacted them, at night, they were friendly and fully covered her treatment. It can be good coverage, but at the same time, good and polite support, no way!