The lovely guys at Xbox.com are doing a Hulu promo which will let you have 1 Month of Xbox Live GOLD for £1. You can do this six times thus giving you 6 Months Xbox Live GOLD for £6.
You can be a current Gold member and it will let you do this, it just extends your sub.
Direct Link -
Remember that it activates your Auto Renewal, so you'll probably want to call Xbox Live Support and cancel that.
*Sorry if this is against the rules. I thought being an Xbox.com Promo it would be allowed on the official forums for Xbox.com