UK Pension recipients in Australia, NZ, Canada, South Africa (and no doubt other former UK colonies) only receive a NON indexed pension.
This is of course bitterly disputed by those recipient because they paid in so why should they not be fully paid out similar to other / UK recipients. But that’s their ongoing battle. (I’m advised their contributions are quarantined and adequate, and thus not in competition with other UK socioeconomic demands).
Post Brexit (whatever the / if ever an outcome) what guarantees are there that those UK pension recipients who remain in France / EU will continue to receive indexed UK pensions?