Heathrow expansion 'essential' after busiest May

Heathrow airport deems expansion "essential" post-busiest May on record, with over 7.2 million passengers passing through terminals, up 0.4% from last year. The airport faces challenges due to space constraints despite being an efficient hub, prompting calls for an honest conversation. Critics, including London Mayor Sadiq Khan, oppose expansion due to concerns over climate change commitments, noise, and air pollution.