Swansea
Whoever advised you of this is incorrect!
The relevant age is now 65 or State Retirement Age, whichever is the higher.
Providing you have an award of PIP before you reach the relevant age then you can continue to receive PIP providing you continue to meet the criteria.
The only restriction is that you cannot be awarded the Mobility component if there no such award in place at the relevant age and if you then it cannot be increased if you only have a Standard award.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems