Hidden River Festival 2013

For 400 years, the New River has been bringing us Londoners clean drinking water from Hertfordshire. Without it, we'd probably only be drinking Lilt. So celebrate its anniversary with this full program of music, history talks and walks, food, craft stalls and comedy. Main events are all in Finsbury Park, but there will be walks and talks along the river itself and various venues along it, check website for full details.