All the London railway stations :
Finchley Central station
I visited Finchley Central station on the Northern line in June 2019, and the station is accessible. The platforms are joined together by a very accessible bridge between the two platforms, and the street. There is a lift from at least one platform. Further travel south from this station takes you into the depths of the deep, and dark Northern line.
Finchley Central bridge platform access between both platforms & to street
Finchley Central lift
Finchley Central is on the Northern underground, and is accessible to wheelchair travellers, with lift access between street level and platforms. Note the step sizes onto the trains.
Underground lines : Northern
Accessibility friendly : Northbound towards High Barnet (A step 147mm/ gap 0mm), southbound towards Camden Town (A step 177mm/gap 63mm).
Lift access between street and platform.
General description : High steps make this station more awkward.
Inclusive Britain Station Guide