The government has been progressively reducing maximum accrual percentages since 1 January 2015. This could mean the amount of pension you are permitted to accrue will be reduced, depending on the accrual percentage specified in your pension scheme. The pension you have accrued so far will, of course, remain intact.
If your pension scheme has a provision for a mandatory reduced accrual percentage, you will, on average, accrue 10-15% less pension annually. This means you will receive a lower pension benefit when you retire. The accrual percentages for the surviving dependants’ pension will also be reduced, meaning your surviving dependants will receive less pension in the event of your death.