I need to check when a .co.uk domain name expires that is not under my control. nic.uk doesnt give the info anymore. Is there another way to check?

Add 3 years to the registration date...
2 years for the registration
1 year being in "detagged" status, and then about a week whilst it is suspended and then deleted from the registry.

The Nominet tag holder that is currently the tag holder for the domain would be able to check, but other than that i don't think there is any way of knowing. You could try calling Nominet but it is unlikely they will help if the domain isn't yours.