I visited Bounds Green station in July 2019. Not much to say, there is a long elevator to exit or enter the platforms.
All the London railway stations :
Bounds Green station
Bounds Green is on the Piccadilly underground line, and is not an accessible station for wheelchair users due to the escalator travel required. See pictures and further accessible transport detail from links below.
Bounds Green elevator
Underground lines : Piccadilly
Accessibility friendly : No. Escalator access between street and platform.