*Although superseded by the equality act the DDA is unique in anti-discrimination law in this country as it does allow discrimination in favour of a disabled person.
So you can allow a disabled person to jump a queue, sit in a preferred sat, allow their assistance dog into a place food is sold etc.
Yes it is discrimination, a blind person can take their guide dog into a restaurant, I can't take my cat. Yes I am discriminated against, but I am a sensible human being. I can see the point.
*
Whilst treating a disabled person more favourably may be legal in some circumstances I would not describe the situations sassh describes as discrimination.
If queueing, having to sit elsewhere, not being able to take dog into restaurant etc will place a disabled person at substantial disadvantage then it is only right that allowances are made.