The Scottish national teams are from Scotland (one of the four countries that together are the United Kingdom of Great Britain and Northern Ireland).
Scotland lost to Canada in the 1990 Quidditch World Cup. Seeker Hector Lamont blamed his failure to catch the Snitch on the shortness of his fingers, inherited from his father who was nicknamed “Stubby” (Pm).
A match listing published in the Daily Prophet has ticket information for an international friendly game between Scotland and the Transylvanian Second Seven (DP2).
During the 1994 Quidditch World Cup qualifying rounds, the Scottish National Team lost heavily to Luxembourg (GF5).
Chaser Catriona McCormack played for Scotland 36 times and her daughter Meaghan is the Keeper for the current Scottish team (QA7).
Even though Scotland has participated in several Quidditch World Cup matches (including the 1990 final), there are no mentions of Quidditch or any other wizarding sports in its Wikipedia entry (Wikipedia).
Although the date printed on the second Daily Prophet Newsletter (DP2) is 8 February 1999, the timeframe for this event is 1992-1993.
From the Web
Writing by J.K. Rowling on Pottermore:
Pottermore enhanced reading experience: Quidditch World Cup
Screenshots of the original Daily Prophet coverage of the 2014 Quidditch World Cup on Pottermore: Imgur archive
Harry Potter Wiki: Scottish National Quidditch Team
Tags: blame defeats international pride Quidditch history sports teams