If you have a disability such as MS and you are attending a music, sports or other public event, check if you can get a carer/personal assistant ticket for free. You will likely have to provide proof of your disability and book these tickets in advance so check plenty of time before the event.
If you go to the cinema, apply for a CEA card and get a carer ticket for free. You present the card at the time of booking. There is a small fee and it needs to be renewed every other year.
With thanks to MSquared for providing this useful information.