Accessible Playgrounds

Hi my name is Lynn and I have been reading about Scope's campaign 'Disabled Children Shouldn't Be Left Out'.  With a group of other people, I volunteer at my local park and we would like to see it developed so that it caters for people with disabilities and for those who are not disabled.  Out idea is that it would encourage people to play/exercise together encouraging community cohesion and understanding.  Is there anyone out there who knows of any parks that do something like this already?  We are really keen to make this happen but need to be able to approach our local authority with a decent plan..... anyone?     thanks