tedster - 8:37 am on Aug 23, 2012 (gmt 0)
Ever since Google became a registrar, they say they are not using the Whois data this way. There are many other "footprints" they use to find common sites to one owner.
a senior guy in this sort of thing
How fortunate you were to get this kind of information from Google. Was it someone on the Search team, or another division?
I'm not clear on what the exact feedback was, however. I understand there is a way for a user to go to the UK domain from the order page. That sounds like an obvious way for Google to see the connection. However, why did content on the UK site hurt the .com rankings outside the UK? Even if the content is essentially duplicated, that is OK on a country code TLD in my experience.
I know that you are only trying to relay something your friend told you, but what you posted so far isn't very clear. If you can learn more details, it would help.