To find a charity at CAFOnline, try here:

http://www.cafonline.org/apps/Charities/BasicSearch.aspx?dsp_keywords=&dsp_location=&dsp_exactmatch=False&searchtype=Advanced

To find a charity at JustGiving, try here:

http://www.justgiving.com/Process/CharityGuide/default.asp

It is up to you as a business owner to choose where you want to donate your own revenue to.