Key facts
- Climate change could cost London up to £36 billion ($50 billion) per year by the 2050s.
- Costs are projected to stem from lost working hours, business disruption, and infrastructure damage due to extreme weather.
- A separate report estimates a potential annual cost of £15 billion by 2050 without significant government action.
- More frequent heatwaves, floods, and droughts are expected to negatively impact Londoners' health and finances.
- Recommendations include increasing green spaces, improving drainage, and retrofitting social housing for heat resilience.
Climate change is projected to impose significant financial burdens on London, with one report estimating annual costs could reach up to £36 billion ($50 billion) by the 2050s. This figure, released by the Mayor of London's office, accounts for reduced GDP due to lost working hours, business disruptions, and damage to infrastructure caused by increasingly extreme weather events.
A separate report from Central London Forward (CLF), a consortium of 12 central London local authorities, warns of a potential £15 billion annual cost by 2050 if "drastic action is taken at all levels of government." CLF highlights that more frequent and severe heatwaves, floods, and droughts will adversely affect Londoners' health and finances.
Both reports emphasize the need for proactive measures. CLF is urging the Greater London Authority (GLA) to implement strategies such as expanding green spaces and enhancing flood defenses. The report also advises retrofitting social housing to better withstand heat and improving drainage systems, like permeable paving, to manage rainfall.
London's vulnerability is exacerbated by the Urban Heat Island effect, which can make the city feel up to 10 degrees hotter than surrounding areas due to dense buildings trapping heat. CLF notes that while creating green spaces is recommended, it can be challenging for cash-strapped local authorities without statutory requirements.
In response to these concerns, the Mayor of London recently launched 'Heat Ready London,' a long-term initiative aimed at adapting the city to rising temperatures, protecting vulnerable populations, and strengthening critical infrastructure.