The state pension age is currently 65 for men and gradually increasing for women from 60 to 65 - it's 62 and a half from April 2015.
From December 2018, it will start to increase for both men and women to reach 66 by October 2020. The government is planning further increases, which will raise the state pension age from 66 to 67 by 2026. They will then review it every five years in line with life expectancy.
You can check your pension age by calling Age NI Advice or using the GOV.UK state pension calculator.