UK hospitals may have to adopt measures such as establishing cool rooms where the vulnerable can take shelter and offering cold drinks as part of the government’s heat wave plan if the Met Office raises its warning level.

Hospitals would also be required to switch off lights and electrical equipment in a bid to decrease temperature levels, UK newspaper The Telegraph reports.

The UK’s Met Office is set to increase the heat-health warning (currently at level two) to level three which is the second-highest level, and said that the elderly, those with chronic ailments and the very young are more susceptible to risk.

With emergency ventilation measures being adopted it has also been warned that diseases such as swine flu could spread.