- Swimmers ignored "no swimming" signs at Hampstead Heath ponds, disturbing newly hatched cygnets, ducklings and nesting swans and sparking local outrage.
- City of London bosses warned the behaviour harms wildlife and said police may issue fines or make arrests; dogs are also banned after footage showed one in the water.
- The incidents came during a heatwave that pushed London to 34.8°C and triggered record levels of ambulance calls, making it one of the busiest days for emergency services.
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