Why are some women complaining about the retirement age being raised? (UK)?

I do not get this! Women fought/fight for their equal rights in the workplace,and claim they still are to a certain degree, they want equality, (same as a man, same pay etc) Now the age of retirement for a woman in the UK is the same age as it is for the Male, why are the women complaining about this, when it is their original demand of equality in the workplace?