Compare and contrast:
Arriva’s Conditions of Carriage from August 2013 to December 2016:
and Arriva’s Conditions of Carriage as of January 2017:
The change from request to require may be semantic, and the proof is in the pudding as it were. But this is particularly relevant as regards Arriva, because a very similar legal case against Arriva lost. I think that Arriva should apologise to the disabled people who it defeated in that case and compensate them handsomely, but that’s not the way the world works, sadly.