Diversity Day at the Thames celebrates differences in language, heritage, dress, cuisine, and tradition. It features a variety of games, stalls, musical performances, as well as fashion shows, followed by cultural dance performances. Teachers and students both represent their cultures with attires and cuisines. The highlight of the event is The Fashion Show, which mingles modern day fashion with traditional fashion, while showcasing vogue attires of different ethnic and cultural groups.
Every year, the Students Council at Thames International College organizes an event that encapsulates the true spirit of Nepal's rich cultural diversity.