All the London railway stations :
Underground lines : National Rail, Bakerloo, National Rail Chiltern Railways
Accessibility friendly : The British Rail station is accessible, but not the Underground line.
More comment : Flat access to all six National Rail platforms, where boarding ramps are available (24 hour advance notice recommended). The Bakerloo underground is not classified as step free; with stairs and escalators between street level and platforms.
Inclusive Britain Station Guide