In article ,
Roland Perry wrote:
ps. I'm a bit disappointed that TfL (like many others) conflate
'disabled' with 'in a wheelchair'.

They don't.

There are many other disabilities
which can significantly affect people's ability to use public transport,
but aren't affected by step-free-ness.

Indeed; and TfL have sensible policies for helping those with visual
imparments (VIPs!), for example.

I would have no issue if they went beyond their wheelchair symbol
and actually described the relevant stations as "step free",

That's exactly what the do. See, for example, the Step-free Tube guide
on http://www.tfl.gov.uk/gettingaround/1106.aspx which details in great
detail the steps you will encounter when using any given station.

--
Mike Bristow