I want to close Credit Builder - why is my Boost limit closing?

Monese Boost is only available when bundled with Credit Builder. Because of this, any outstanding Monese Boost balance you have is secured using your Credit Builder balance as collateral.
This means that if you decide to close Credit Builder, this collateral amount will return to your GBP account, and will no longer exist for Monese Boost.
As a result, your Monese Boost account will close at the same time, and your Boost limit is no longer available.