Introduction to the article-collection Interfaces between Language and Culture in Medieval England: A Festschrift for Matti Kilpiö, ed. by Alaric Hall, Olga Timofeeva, Ágnes Kiricsi and Bethany Fox, The Northern World, 48 (Leiden: Brill, 2010). The article comments on the intellectual context of the collection and surveys its twelve articles, which promote the growing contacts between historical linguistics and medieval cultural studies. They fall into two groups. One examines the interrelation in Anglo-Saxon England between Latin and vernacular language and culture, investigating language-contact between Old English and Latin, the extent of Latinity in early medieval Britain, Anglo-Saxons' attitudes to Classical culture, and relationships between Anglo-Saxon and Continental Christian thought. Another group uses historical linguistics as a method in the wider cultural study of medieval England, examining syntactic change, dialect, translation and semantics to give us access to politeness, demography, and cultural constructions of colour, thought and time.