Today - after 6 years - Slam Factory announced it's closure with the following statement on their Facebook page.
"We are sad to announce that Slam Factory Wrestling has closed down. Slam would like to thank everybody that has worked with us, sponsored and come to see our shows! This page has been de-activated and will be no more after 14 days. We wish everyone the best in their future endeavours!"
Sources: Greg Prowse, http://www.facebook.com/pages/Slam-Factory-Pro-Wrestling/106909709368357