I always got the impression you had to be on deaths door before they'd medically retire you, always assumed I'd just be sacked anyway if it came to it, then screwed!
Initially I was investigated for MND and/or stroke as my symptoms were so quick & mobility deteriorated so rapidly.
But they had thorough reports from Neurology & Rheumatology consultants, private physio, Occupational Health & my own very good GP.
I wasn't impressed with some of the comments from the independent assesor, especially considering he never spoke to me, let alone meet me.
But they would have struggled to say I was "swinging the lead". The assessor said I would possibly be able to work at some point in the future (to avoid top tier payments 🙄) but it would be hard to say explicitly.
I would have had very good grounds to contest dismissal so I think they decided it was easier all round to pension me off so I'd quietly disappear.