Qualification documents must either be in English or have an English translation provided in order to meet UKVI regulations. If your certificate or transcript is in a different language and you have an English translation, the translation documents must meet the UKVI translation requirements which you can find at www.gov.uk/government/publications/visitor-visa-guide-to-supporting-documents
You will need to provide both the original (untranslated) document and the translated versions.
If you require details of appropriate translation services, details can be found at www.dur.ac.uk/immigration/extendvisa/supportingdocuments/translation/
You may also need to provide evidence of your English language ability as part of your visa application.