Hampstead Heath authorities issue warnings for people using the site’s swimming ponds as a new heatwave hits London. According to reports, concerns have been raised about safety and management of public access during periods of extreme heat. Following the previous heatwave, fights broke out at the Parliament Hill Fields Lido, and large crowds entered areas designated as non-swimming ponds. The warnings are intended to discourage people from using ponds for purposes other than swimming and to reduce incidents and unsafe behaviour during peak demand. While the reports focus on the site’s swimming ponds and related areas, they also highlight that public recreation pressures can increase during hot weather, affecting crowd control and safety. The new guidance comes as temperatures rise again, prompting greater footfall at Hampstead Heath’s outdoor facilities. The outlets do not provide detailed instructions in the brief summaries, but they agree that the current message is to follow designated pond use rules and to avoid entering non-swimming sections.