engelsk

I think it is closer to  British English with more of a British accent and expressions because they are closer to Britain. (I am American) but perhaps a Norwegian will agree or disagree with me.

There isn't really a norm to this; some Norwegians are more influenced by British English (RP), whereas others are more influenced by American English (GA). The majority of us probably sound neither British nor American, though: I would say that most Norwegians tend to aim for a more "neutral" English pronunciation - not pretending to be from any specific geographical area / not "putting on" a specific accent / not trying to sound like a British or American person, but rather simply focusing on speaking with a clear and correct pronunciation, focusing on being easily understood. 

In schools, some teachers aim to use the British Received Pronunciation, whereas other teachers prefer to speak with a General American pronunciation. Students, however, are all free to be influenced by the style of pronunciation they themselves feel the most comfortable with - regardless of their teacher's personal preference (i.e. the students don't have to imitate the teacher). You might find that the younger generation have preferences regarding pronunciation that differ from those who went to school a decade or two ago.

As far as vocabulary goes, a lot of Norwegians are using a mixture of British and American words without thinking twice about it. Being exposed to resources such as news channels, movies, TV-series, talk shows etc. from a variety of English-speaking countries (without any dubbing into Norwegian), many Norwegians might use words such as flat/apartment, lift/elevator, jumper/sweater, lorry/truck, courgette/zucchini, pavement/sidewalk etc. simply as synonyms, not actually thinking about whether these are British or American words ;)

engelsk

We speak closer to american English.  but slower maybe, and depending on your norwegian dialect, it tends to have an influence on our English aswell. It has to do with the tone. Different dialects have different tone and rythm when speaking I guess. Hence people from the north are said to have an easier time speaking English than someone from southern areas. 

In schools we are first and foremost thaught and encouraged to speak with an American pronounciation (and if you were to try and suddenly speak with a British accent in class, people would think you were joking or trying to be clever or something.) Even though our books were for British. It may have to do with compitability with our own language to do.