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Story summary
- Ordnance Survey’s heat-vulnerability index ranks Portsmouth as the most heat-vulnerable UK city by 2100.
- The index also lists Westminster, Plymouth, Leicester and Exeter among the most heat-exposed cities by 2100.
- Leicester is projected to climb from the 10th to the 4th most vulnerable city by 2100.
- The City of London has the highest built-environment score and the poorest natural cooling in the index.
- Portsmouth officials flagged Somerstown, Portsea, Southsea and Fratton as heat-hotspots.
