NAV 2013 R2 rollup 3

Hi

I have recently downloaded rollup 3 pack for NAV 2013 R2 platform update. I can understand that there must be differences between database objects for different localizations. But for NAV service and client are there any differences? Our NAV server has NL and UK instances. Which version of rollup files must we use? The same for RTC client application.

Thanks in advance!