I've donated already -all of my income around £4,000pa. Whether I wanted to or not is another matter. My ESA payments will stop in September because this government has limited it to 365 days, totally ignoring the Lords who didn't want this to happen and I may even be donating more tomorrow - they are debating the new Personal Independant Payment replacing DLA.
Oh, how happy I feel just giving my income away, just like that, how nice of this government to do this on my behalf afterall "we're all in this together".