Longer Coax Required For Router

Hi,

As the title mentions I need a longer coax cable for my router. I've read that I should get one from Virgin themselves, rather than buy third party online.

I've recently had to move everything around in the room it is located and it can't reach the desk it was sat on. Instead, it now resides on the floor, which isn't great. I'd need a 5m cable but I don't know how to go about requesting one.

I had cconsidered moving the router to another room entirely, where more devices that would benefit an ethernet connection are located, but I don't know how to request that either. It would mean moving it from upstairs to downstairs so it would be a complete rewire in that instance.

Any help at all would be appreciated.

Thanks,

Alan