Of course! Please note, though, that it can't be reduced to an amount lower than your current balance.
If you'd like to chat with us, our specialist team are available from 9am-5pm, Monday to Friday – just click the icon in the bottom left to open up our Support feature. If you're already viewing this article in Support, please click the diagonal arrow in the top right, next to the header.
You can also email us at firstname.lastname@example.org (please make sure you include your account number, name and address and the amount you'd like your credit limit reduced to).