Microsoft was going to offer the U.S. and U.K. a free trial weekend of Xbox Live Gold, but only the former ended up happening. The British trial has been postponed because of technical problems.
“Due to a technical issue the Free Xbox Live Weekend will be postponed this weekend in the U.K., said a Microsoft spokesperson. “We are committed to further trial and promotional activity for the free community and will be in a position soon to announce a further Free Live Weekend. In the meantime all Free and Trial members should look out for a host of new promotional offers on the Xbox Live dashboard.”
Source: CVG
