This article applies to 123-reg Domain Names
If you accidentally allow your domain to expire, there is still a chance to keep hold of it.
Most TLDs enter a Redemption phase. In a Redemption phase you still have the chance to regain the domain name. To do this you will have to contact the 123-reg Support teams who will be able to attempt domain recovery for you.
This article will show you the different ways of contacting 123-reg for support.
You may still be able to renew .co.uk domain names through your control panel, but for most TLDs, such as .com and .org, you will need to contact support.