In reply to moraldecay:
You need to remember that the UK is about 25th richest country in the world, out of about 200. By any world standards, financially, pretty much every single person in the UK is one of the haves not the havenots. In the history of the world, we have all won the lottery.
I was surprised to see that the top 1% of earners in this country pay 27% of all income tax, so the ones that don't find major loopholes are paying their share.
Revolution is unrealistic because the safety net in this country is very high. There is very little absolute poverty or restricted freedom in this country.
I think you're on safer ground on your 'special needs adventure playground'. I'm sure public facilities like this, or sports clubs etc. can be a very cheap way to help disadvantaged children, and I do think it's short sighted when these small initiatives are always the first to be cut.
If you really want to help children in need, the first place to look, as said higher up this thread, is how to help children from difficult homes, without being too intrusive? How do you help kids when their parents are; drug addicts, heavy drinkers, violent, have learning difficulties, are disabled, in prison, or have died? How do you help build community spirit, when many people from the age of 14 up just wants to go and drink heavily? The rich may be able to help fix some of this, but they are not the main cause of the problems