Vertical image at Happisburgh with model of footprint surface produced from photogrammetric survey with photo of footprint 8 showing toe impressions. Image credit: Happisburgh Project. The first known Britons who lived near Happisburgh in Norfolk on an ancient course of the river Thames, over 800,000 years ago. This early settlement in Britain of human presence in Northern Europe. Until recently the earliest finds of human habitation in Britain were dated 500,000 years ago.