Acton Main Line West Ealing West Drayton Southall Hayes & Harlington
Hayes and Harlington went step-free yesterday, which means there's only one more TfL Rail station to finish and that's Ilford.
As for the tube, when Amersham's lifts opened in February the proportion of step-free tube stations hit exactly 30% (81/270). Last month Wimbledon Park lifted that to 31.9% (86/270), and next week it gets even better.
Tube(next week)
87) Battersea Power Station 88) Nine Elms
Two new fully-accessible Northern Line stations will bring us to 32.4% (88/272).
Also, if I've counted properly, it'll tip the proportion of step-free stations on the tube map over 50% for the first time. Today it's only 49.9% (251/503) but next week it'll be 50.1% (253/505), i.e, more step-free stations than not. Counting stations on the tube map is somewhat subjective, and even being one out would tweak the result, but by my calculations the Northern line extension is the tipping point. Interestingly we'd have got there sooner if Thameslink hadn't been added to the tube map - I think Southall would have done it.
And the year's not over yet.
Tube(rest of 2021)
??) Osterley ??) Sudbury Hill ??) Harrow-on-the-Hill
Three more tube stations are due to go step-free before the end of 2021, and whichever's third will mark the point at which one-third of tube stations are step-free (91/272 = 33.5%). It's nowhere near enough, but four years ago it was only 28% so we're getting there.