Free bus local travel is available to those who've reached the state pension age for women. (That applies irrespective of whether the person is actually male or female).
As your question appears to recognise, the state pension age for women starts to rise from this April. However it's a gradual process. A person born on 1st August 1950 reaches the woman's state retirement age on 6th November this year. Someone born on 31st August 1950 reaches that age on 6th January next year. See here:
http://www.pensionsad...nsion-age-calculator?
(Remember to enter the gender as 'female', even if you're a fella'!)
Chris