Step forward Caroline Russell, Green leader on the London Assembly, who this week has done precisely that. The occasion is ozone – a subject that has, Titbits concedes, been criminally underserved by the borough’s dinner-party chatter. Sir Sadiq maintained that he was, “always happy to learn from other cities”, which, in Sir Sadiq’s lexicon, is roughly the polite equivalent of “amber”. ■ In April, Sir Sadiq Khan warned Labour voters “flirting” with other parties that they might come to regret a Green- or Reform-led council. Councils like Hackney “have been great working with us”, the Mayor said, adding that they “deserve credit”.