Totally Thames: TideFest
Time Out says
Make the Thames Tideway your watery playground on this day of taster sessions, walks, activities and entertainment. The festival returns with paddleboarding at Kew Bridge (11am-4pm), kayak taster sessions (noon-6pm) and family-friendly activities at Strand-on-the-Green. Activities are either free or offered at a subsidised rate. Pre-book events via the TideFest website.