The kids channels nick jr etc would not be removed unless you have made package changes.
Which package are you on?
Are you missing any other channels?
Have you tried reconnecting for missing channels?
Please try the following:-
Press Home on the remote.
Select Help & Settings.
Select TV Care from the top bar.
Select Missing channels.
Select Refresh my channel list to check for missing channels, and to get yourVirgin TVV6 box automatically updated if they are missing.
Some kids channels were given to everyone for free at the start of the corona virus but have since been removed
March 31st to April 21st ( VM actually allowed customers access to these channels for a few weeks longer than the cut off date) The full line up of extra channels for families to enjoy includes: Cartoon Network Boomerang Cartoonito Nickelodeon Nick Jr NickToons Nick Jr Too
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali
As newapollo has pointed out, you won't have just randomly lost channels but something has changed.
Most likely is this - were you on Full House or TV-XL? If so, this used to include the kids channels but on "new' Full House/Max-it/TV-XL, kids channels (not the FTA ones like C-BBC etc) are now an optional, chargeable bolt-on.
I'm going to guess you've had a change of package, and in doing so have been moved from legacy Full House, to new Full House. Unless you specifically requested the Kids Pack added on, you wouldn't now have them.
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