The same as the global reach of the Internet so I'm not going to set myself limits of my web activities. Bearing in mind my activities on both markets Polish and British website is now available also in English.Similarly, accounts on social media sites will have entries in both languages.
From technical point of view since you first time entering the page language is automatically assigned based on the IP address from which you are entering. It can be easily changed at any time using the switch in the upper right corner of the page by flags language switcher..