If you were paying these AVCs after 31 March 2016, you will carry on building up an additional Career Revalued Benefit pension. These will then be increased with standard pension increases.
You can cancel your Career Revalued Benefit AVCs at any time. All you need to do is speak to your employer. This will mean you’ll only receive the benefits you’d built up. Think about this carefully first as you won’t be able to restart them once they’re cancelled.