If you registered a power of attorney in England and Wales between 1 April 2013 and 31 March 2017, you will be entitled to a refund on registration fees.
The refund applies for both types of lasting powers of attorney, and also enduring powers of attorney.
It takes only 10 minutes to claim online here: https://www.gov.uk/power-of-attorney-refund.
This right ceases on 1 February 2021, so take action now if this applies to you!