UK Travel Medical Tourism Insurance

[Lemons&Oranges 0]

That’s a mouth full! Not ironic….…
ok so UK/Irish folks.
Has anyone got a solid insurance cover for surgery abroad?!! Im having trouble finding cover.
Not for travel medical which is exclusively for pre existing medical conditions and doesn’t include surgery.
I’m talking Uber specific Travel Tourism medical insurance.
My sister has me pinned on honouring her wish that I get full cover for the surgery, in the event anything should go wrong as ‘normal travel insurance’ won’t cover it.
I’ve found one - Medical Shield, not overly impressed. It’s pricey and a bit meh for what it is! But I guess if you have little to no competitors…
Anyway any recommendations please, would be gratefully welcomed :) thank you muchly