I would reboot your box. Virgin’s BBC1HD channel IDs were changed today to prepare for future regional variations. If your box has not picked these up it will not find the channel. Rebooting the box should update the channel IDs.
If it’s saved in your favourites list, you may have to re-save it.
VM BB TV Landline. Vonage 2nd line. Freeview/Freesat HD, ASDA/Tesco PAYG Mobile. Customer since 1993
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media.Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks
Depending on how many boxes you have and which boxes are missing 108 you only need to reboot the boxes with 108 missing.
If the box is on press the power button on the remote to turn off the 360, then turn the power off, wait for 1 or 2 minutes then turn the power switch on. You will then see the welcome screen and it will take a few minutes to start up, if the 360 is repowered from standby you will need to press the power button on the remote, if you repowered from the box being on it usually comes back on live TV.