As Ernie_C mentioned, try a channel that can be streamed (wireless symbol), then you should have the option to watch on the iPad. Try that and see if it works. When I checked your account I could see that the iPad is currently registered to use TV Anywhere so this should work.
Getting started with the Virgin TV Anywhere iPad app
When you've got our TiVo service, if a channel is in your TV package and part of the Virgin TV Anywhere line up, you can watch it wherever there’s WiFi using the TV Anywhere app. You can also do just about everything from your iPad that you can do with your TiVo® remote control, such as:
find and explore shows
watch over 20 Live TV channels
control live, recorded and on demand TV
I work in the VM Swansea Faults Center .All comments are my own. I do NOT speak for VM.