The Normal Pension Age for the LGPS is State Pension Age, or 65 if later. This is the age at which benefits can be paid without any reduction. If you draw them after Normal Pension Age, your benefits will be increased in line with guidance issued by the Government Actuary. Under tax rules, benefits must be paid before age 75.
You can retire voluntarily from age 55, but if you retire between age 55 and 60, your benefits will be reduced for early payment. If you retire between 60 and Normal Pension Age, some or all of your benefit may be reduced (depending on how long you have been a member of the scheme and your age).
The LGPS contains special provisions for early retirement without reduction on grounds of ill-health or redundancy/efficiency and for flexible retirement (drawing your benefits while still employed).