Sky go extra upgrade

[Shazaky]

Can’t find anywhere the link to upgrade to sky go extra, or am I entitled to this as a perk via my SKY VIP as some people

have been saying 

[Annie+UK]

Why not phone sky and ask?

A phone number is given on a link on the page linked to below:

There is also Sky's How can we help? page
(make sure the correct country is selected at the bottom of the page)