I'm sorry to hear your Catch Up isn't working for you.
I've taken a look at your account and tried to run some diagnostics on your V6 box, but it's currently showing as offline. Is the box switched off at the moment? If so, could you let me know once the box is on and if not, could you reboot the box for me and let me know once you've done this? We'll take another look at this for you then.
I've taken another look at your account however the box is still showing as offline at the moment which may indicate a fault.
I'd recommend doing a forced connection on the box which you can do by going to Home > Help & Settings > Settings > Network > Connect to the Virgin Media Service now. You can step back and carry on watching TV while the box does this. If you could then try catch up again for me and let me know if it still isn't working.