Now don't get too excited everybody, but there is an outside chance that these might actually be a British version of Cherry Ripe Chocettes.
Look at the review section for Cherry Ripe Chocettes and someone mentions that these were available for a short while under the name 'Bouncers' in the late 90s. Could it be that this was a test run and they have been introduced now because people are always asking Cadbury why Cherry Ripes are not avialable here?