Well the Joint committee for immunology and vaccines ( or something like that ) didn't recommend that 12 - 15 year olds be offered the vaccine as the medical benefits were negligible at most , however they said other considerations may need to be considered . From that the decision was made to offer it , and as far as i could make out the main driver behind the decision was to stop disruption to schooling however it was never made full clear as far as i could tell .
Well quite.
The Welsh Assembly have offered it out, but there's no suggestion whatsoever that people will be coerced into it.
Not that they could anyway, obviously.
The offer is there, and for near adult teenagers the choice is theirs.