All the London railway stations :
I visited the main line Railway station concourse in Octobber 2021. I am following up since its first build in 1864.
Charing Cross is a main line National Rail station on the South Eastern rail network, with level access to all platforms. There are also a number of food outlets herwe, and a free toilets. The non-accessible toilets are via stairs, and locked accessible toilets do exist.
Charing Cross Railway main line station - ALL accessible areas in Octobber 2021.
The underground lines, i.e. the Northern and Bakerloo lines are a separate station and require two escalators and about 20 steps.
See pictures and further accessible transport in London detail from links below.
Underground lines : Northern, National Rail South Eastern, Bakerloo.
Accessibility friendly : National Rail Main Line rail Station is suitable for disabled passengers as there is a level access to all platforms. You can also access the bridge across the River Thames from here, at the left side of the station. The other end of the bridge has an elevator, near to South Bank.
Accessible route towards South Bank & Waterloo - in March 2020
The Undergound lines are NOT accessible to wheelchair users
due to there being stairs and escalators between the street and the platforms.
More comment : National Rail Map & Guide.
National Rail only