The following bug has been logged on the website:
Bug reference: 8592
Logged by: Colin Wright
Email address: colin.wright@thinkwhere.com
PostgreSQL version: 9.3.1
Operating system: Windows 7 / 2012 64 bit
Description:
I've completed several installations of 9.3 on Windows 64bit systems, and
noticed that even though I've specified "English - United Kingdom" when
prompted during installation, the database is initialized with Collation and
Character Type set to "English United States".
I haven't tried specifying any other locality during installation so can't
say if this happens in all cases.