Under the terms of the Zopa Principles, investors weren’t able to opt out of the sale, as Zopa purchased your loans at face value. 

As we’re no longer matching investor funds to new loans, we believe this is the best outcome for investors. The purchase locked in any returns you’d already earned and ensured your funds were available to withdraw from your holding account in a timely manner, rather than having to wait for your investment balance to wind down over up to five years.