After the UK’s hottest summer on record, a sharp trade argument is back on the rank: if a licensed taxi has air conditioning, should it have to work — and be switched on when a passenger reasonably asks?
Hottest summer on record
The [Met Office](https://www.metoffice.gov.uk/about-us/news-and-media/media-centre/weather-and-climate-news/2026/summer-2026-provisionally-hottest-on-record-for-the-uk) says meteorological summer 2026 (June to August) provisionally averaged 16.5C across the UK, beating 2025’s 16.1C in a series running back to 1884. England, Wales and Northern Ireland each recorded their warmest summers; Scotland was among its warmest.
Heatwaves pushed daily peaks above 38C, including 38.0C at Lingwood in Norfolk in June and a season high later revised to 38.2C at Hartpury College on 13 August. Met Office scientists also say a summer like 2026 was made around 130 times more likely by human-induced climate change, with hotter summers expected to become more common.
For cabbies, that is not abstract climate news. It is long shifts in traffic, hot ranks and passengers stepping out of crowded stations and streets.
Comfort is part of the product
Passengers often treat a cool cabin as part of what they are paying for — especially with children, older relatives or luggage after a hot walk or Tube ride. Drivers who keep A/C working usually hear that appreciation; some of it shows up in tips.
The awkward counterpoint is familiar: A/C “broken”, “needs a regas”, “uses too much fuel” or “kills the battery”. Energy use is real on both diesel and electric fleets. But saving a little fuel or range while leaving people sweltering is a poor commercial trade. A bad trip rarely sticks only to one driver. It sticks to the trade.
Closed windows also cut noise and fumes. A cooler cabin is often a calmer one for everyone in it.
Heat is a workplace issue
This is not only customer service. Professional drivers can spend eight, ten or twelve hours behind the wheel. Research on cabin heat and driving cognition points the same way: higher temperatures are linked to worse performance and more fatigue.
A [2023 Sustainability study](https://www.mdpi.com/2071-1050/15/2/1673) on vehicle cabin temperature and EEG measures found cognitive performance fell as temperature rose from about 20C towards 30C, with better alertness and fewer errors in the cooler range. Separate field work on taxi drivers under heat stress has also reported falls in precision, speed and attention, with more errors and mental fatigue.
Licensing already treats the vehicle as a workplace and a public service. Tyres, brakes, lights, accessibility kit and payment systems are not optional extras. Climate control sits closer to that list every record summer.
What the rules say today
In London, TfL’s [taxi Conditions of Fitness](https://content.tfl.gov.uk/taxi-conditions-of-fitness-update-2025.pdf) already require an adequate heating and ventilation system, with independent control for driver and passengers. That is not the same as requiring refrigerated air conditioning, or proving that a fitted A/C system actually cools the passenger compartment.
Elsewhere, many authorities use similar “heating and ventilation” language. Working A/C as a licence condition — where the system is fitted or specified in the approved design — would be a step further.
A workable rule would not force A/C on for every mile in mild weather. It could require that:
- fitted systems are functional at inspection
- cool air, not just a warm fan, is available when requested
- mid-shift failures get a repair window rather than an instant ban from work
Inspection would need a simple performance test. Warm air on a hot day is not air conditioning.
Before the next heatwave
Vehicle owners already budget for compliance costs. The question is whether passenger comfort and driver welfare in extreme heat now sit in the same category as other fitness standards.
Passengers paying for a licensed taxi should not have to haggle for relief from extreme heat, or sit through excuses about fuel and battery drain. If the cab has air conditioning, it should work. If a passenger asks for it, it should go on.
Licensing authorities do not have to invent a new climate. The Met Office has already measured this one. The trade’s choice is whether to set a clear comfort standard before the next record summer arrives.