Earlier this week, Lara Maiklem climbed down to the foreshore of the River Thames at low tide to spend several hours gently scrabbling at its surface in pursuit of a 20-year obsession.
Known on social media as the London Mudlark and the author of three books on larking, Maiklem is at the forefront of a growing number of people spending their spare time combing through the mud of the capital’s river searching for historical artefacts.