That’s extremely poor from BA. I have family members who have autoimmune conditions and physical disabilities and it impacts their approach to travel. To get the reassurance you were given be ripped away is worse than them saying up front that they’ll ignore you.

And having been struck by severe food poisoning on a 3 hour CX flight (wheelchair to the medical centre in HKG, IV fluids and 3 days stuck in hotel room afterwards) I can partly relate to the stress of just seeing a queue for toilets when you know it’s a question of when rather than if.