Ann: Half Yearly Report and Accounts, page-90

If you look at the whole page, you will note that inspection of a register is different to providing one. Minor, but important distinction.

The fee listed is also a maximum, in my experience very few charge it. Most (in my opinion) who try and charge the fee for provision of a T20, T50 alone are just using it as a barrier/excuse to not be transparent. Or stop frequent requestors from using it as a trading tool.