Hiatus Hernia - Support belt

My mother has a very severe hiatus hernia. I'm not sure if could get much worse.

Can anyone recommend where she could get a bespoke hernia belt made.

Ideally in London but could travel as it is essential to help keep her mobile.

Thanks!

try Lakeland Orthotics in Hull. They do a personal fit service. The other ones Sallis do not as far as i know.