Also the .eu TLD, which is a country-TLD for the European Union, consider that the UK (still in the EU), along with Ireland and Malta have English as an official language [1].
1. http://www.nationsonline.org/oneworld/european_languages.htm
Those three english-speaking countries (UK, Ireland and Malta) make up roughly 13.7% of the total population of the EU; when the UK leaves, it will drop down to around 1.1%.
And Ireland isn't leaving the EU any time soon.
Also it is common to stick to the comma as decimal separator and dot as thousands separator when writing English. This convention is independent of the language used.
Same goes for date notation, dd-mm-yyyy is used (almost) always.
In Windows or Linux for example you can select the English language with Dutch localisation. It's used by almost all software developers I know.