I was at Patchway and the station is classed as "A",it has to ticket machine.
I think we may be talking about a different category scheme. Patchway would never be an 'A' in that scheme above. More likely an 'F'
An F1, in fact. I've just Googled for Patchway class A and it's come up with Southerneastern (?), saying:
Step free category A station. This station has step free access to all platforms. In the interests of safety and security, access to the lifts are controlled remotely. Please allow additional time to catch your train to allow the operator to call the lift on your behalf.