Sorry Hawkeye but I think this claim about Sako's manufacturing Hornet's is a figment of your friends imagination. Maybe they make a special limited run for a group of dealers, but I think it unlikely. I have never heard of them in England.
As far as the models Beretta import that is true to a degree. In Canada for example the importers Stoeger only import (afaik) the Bavarian in 7mm Rem mag, 30-06, 300wsm and 300 win mag. The reason for this is these are the calibres that will sell.
However if a person wanted a particular Sako I am sure these people could assist
http://www.gun.co.uk/ ultimately though if the Hornet was available I would have thought Sako might advertise it on their website and they don't. So until I see concrete proof I remain deeply sceptical.