London history over 2000 years
All the London railway stations :
Underground lines : Northern
I visited West Finchley station on the Northern line in June 2019, and the station is generally accessible.
There is a raised platform giving step-free access from the train to platform.
West Finchley platform south with raised platforms
Woodside Park crossing the line is more difficult
Accessibility friendly : Northbound towards Woodside Park (A step 7mm/gap 73mm), southbound towards Camden Town (B step 43mm/gap 147mm).
You need to use the correct entrance/exit depending on which platform you are travelling to or from, as you cannot change between all platforms within the station - you need to make a 350m journey via the street to change between the northbound and southbound platforms.
Use Nether Street entrance to get to or from the northbound platform towards Woodside Park - this route goes via ticket office.
Use Wentworth Street entrance to get to or from southbound platform towards Camden Town - this route does not go via the ticket office and is for ticket holders only; it is only unlocked during AM peak hours, and locked with a RADAR lock at other times, so call 0845 330 9880 or use Help Point on the southbound platform to ask staff to unlock the gate at other times if you do not have a RADAR key.
London pub history directory.