(07 Jan 2018, 10:08 pm)ifm001 wrote that's not what it says on the website though, and they tell you also at Nexus House on application.
I applied through DCC's disability registration forms. It stated that a companion can travel through the agreement area but that it may be used without, too. I've always been asked in county Durham whether I want one or two tickets and, when I was taking him to school with it, then I just flashed my weekly ticket that I needed to travel without him, before 9:30am, rather than paying my own 50p and never got questioned once.
It stands to reason that someone even with a severe neurological disability may be fine travelling alone for 2 miles on a single bus to aunty Freda's house but couldn't unfamiliar or more complicated journeys alone, or that someone with a physical disability can travel to work alone but need a companion when shopping or visiting somewhere that they're not sure about the accessibility of.
And of course, if I were to take littlun on the bus in, say, East Yorkshire, or even Boro, iirc, his pass wouldn't entitle him to a free companion, anyhow.