I am doing this because I want to do it and therefore will be paying for it myself.  Therefore 100% of the donations will go directly to my chosen charity, which in this case is Reading Single Homeless Project.  It is not the most fashionable of charities since it has nothing to do with either children, animals or people with medical conditions but it is nevertheless highly deserving of your support.  Here is some more blurb about it that I took off their website:

OUR VISION

RSHP wants every person in Reading to have their own home and the opportunity for a positive future

OUR MISSION

Our mission is to house, support and empower vulnerable people to transform their lives and fulfil their potential.