21:40CoastSeries 8 ReversionsEpisode 4: The Secret Life of Sea Cliffs 1BBC Two Duration: 19 minutes Thu 10th Dec 2020, 21:40 on BBC Four HDAvailable for 9 monthsWatch nowNick Crane explores some of the most spectacular and scary sea cliffs in Britain.ContributorsPresenter:Nicholas CraneGenresFactualScience & NatureFactualScience & NatureNature & EnvironmentFormatsDocumentariesBrandCoastSeriesCoast: Series 8 Reversions Source: BBC Online