nearly all Malawian newspapers are published in English (though some include small Chichewa supplements),
English remains the language of commerce in the country.
This remains true despite a large majority of Malawians speaking Chichewa and the small number of English speakers outside urban centres. Also, in Malawian government schools, students are taught in Chichewa, and learn English as a second language from about age 10. But in international schools in Malawi (like Saint Andrew's International High School in Blantyre) which follow the British curriculum, English is the language students are taught in, and do not learn Chichewa at all, as it is regarded as a local language.
English words are even replacing their equivalents in other Malawi languages. One study of a corpus of Chichewa discourse captured over a ten-year period found that references to numbers greater than 3 were exclusively in English, at least in urban areas. 
Malawian English has a slight tinge of non-linguistic expressions that are still used, such as "eesh!", an exclamation meaning "oh my!"