I was pleased to find a local charity of mine in the easysearch.org.uk database. I chose Wanderers Haven Animal Sanctuary to receive donations from my searches. Wanderers Haven is a special to me as we adopted our dog Bobby from them in 2008. I have now saved my charity's personalised link as my home button to encourage me to visit the site.
If you already use, or will be using, easysearch.org.uk let me know in the comments which is the charity of your choice to receive donations from your completed searches. There are over 10,000 good causes to chose from!