Remember that if you are in the scheme you pay less tax. If you pay tax the real cost can be about 80% of the cost you see on your payslip. There are additional savings if your employer uses salary exchange.
If you are in the DB section consider changing to the lower cost plan. You can change your cost plan from 1 April by completing form APP6 before the end of March.
If you are in tier 2 or tier 3 in Investment Builder consider changing to tier 1. You can change your tier from 1 April and 1 October by completing form APP6DC before the end of March or September.