Nearly 1,000 years after chronicling the Norman conquest of England, the Bayeux Tapestry is making history once again. The fragile 11th-century embroidery has arrived in London on an unprecedented loan to the British Museum, prompting delight and concern in equal measure. Celebrated as one of Europe's greatest medieval treasures, its journey has reignited debates over heritage, diplomacy and the risks of moving delicate cultural artefacts.