The Numeracy Activities from Learning Clip come highly recommended. Each activity is linked to an objective from the Renewed Framework for Numeracy and, once you have registered, are free to use during the trial stage . All they ask in return is that if you have any feed back, positive or negative, you let them know.
Each clip comprises a short introductory video, an interactive activity and a set of notes.
New clips are being added to the site every week so keep checking for the latest releases.