disabledpersons-railcard.co.uk or 0845 605 0525. Saw this in my mam's Saga magazine today. If you are hearing impaired (which I am through my WG) , you can buy one for £20 per year and get a third off most rail networks for you and a companion.
Only problem on it is that you need a Social Service stamp to prove you are deaf and I haven't got a clue where to get one!
If you have hearing loss due to WG , can you register as disabled?? You'd think I'd know about this as I have had WG for 13 yrs but I haven't even thought about before!!!