How to connect to virgin WiFi on the tube

I read the instructions on https://my.virginmedia.com/wifi/faqs.html_1# that imply that after making a WiFi connection (outside a tube station), it would forward you to the virgin portal.

If only it would let me connect.. 

I have a screenshot of what I see on Android but cannot attach it.

Essentially it prompts for a mandatory  domain, username and password.i tried domain virgin, none etc and it never works with it

The instructions seem to be out of date :

The first time you connect to WiFi on the London Underground, you'll need to be inside the entrance to a WiFi enabled station.

Next, you'll need to make sure WiFi is turned on on your device. Depending on which device you're using, see the "How do I connect using..." sections below.

Once you have WiFi turned on, you'll automatically be taken to the Virgin Media Portal page. Here you'll see icons for Virgin Media, EE, Vodafone, or (if you're not with any of these providers) WiFi Pass. Just click on the one you want to use. If you’re with O2 or Three, you can select your provider from the drop down box under the WiFi Pass button.

If you're with Virgin Mobile, Virgin Broadband, EE, Vodafone, O2 or Three you'll need to enter some of your customer details the first time you use the WiFi service, so make sure you have these to hand.

The details you'll need to enter depend on which provider you're with:

Virgin Media Broadband: you'll need your 'My Virgin Media' email address and password