Nick Sr.

After the "Nickelodeon UK - Nick Sr. Promo (but fake) " video gained 112,432,000 views on the Cybersland version of YouTube, Nick Sr. became an actual channel in West and East Cybersland.

2010 (test broadcast)
Used the old Nickelodeon logo design.

2010-present
The logo is the same as the US version of Nick Jr's logo, except with "Jr" changed to "Sr".