Are you aware that if you receive dla, pips, or other disability benefits you can apply for a card that allows you to gave a career with you for free. ceacard.co.uk
Also there is a card for concerts, gigs theatre etc doesn't guarantee you a free career but majority of time you do get a free career ticket or discount. Also does show the venue your needs without you having to tell them, i.e. Need to be near a toilet.
You have to pay an initial fee for cards but I think both are worth it if you want to get out more.