This journal is mainly "based" in the UK (look at the editorial board) and I think they include French & Spanish abstracts as a sort of historical courtesy to c

This journal is mainly "based" in the UK (look at the editorial board) and I think they include French & Spanish abstracts as a sort of historical courtesy to colleagues. Then the French & Spanish readers can figure out if it's worth the effort to read/translate the English. Many journals used to publish in several languages (or say they'll publish in English and French) and so require abstracts in all "supported" languages, but the language of international scholarship is increasingly English.