Every day during lockdown I beachcombed and made ‘river heads,’ seeing them as ‘unlocked’ voices in dialogue with me and between and within themselves. I was aware of integrating materials from huge swathes of time: stones from possibly 140 million year (Jurassic times), exotic shells dumped as ship ballast brought back from the Mediterranean and the Caribbean, blitz brick rubble, teeth of cows and sheep chucked out from slaughterhouses, fragments of pottery from Medieval, Tudor, Stuart, Georgian and Victorian times, smoothed glass, clay pipes discarded in 16th century, old electric fittings, wire, wood, bones and plastics.