In order to become a licensed London taxi driver, you must pass the difficult and gruelling Knowledge test, of which there is a 70% drop out rate and for which there are no study materials. In order to apply for the Knowledge, you must be: At least 18 years old (you cannot receive your license until you are 21)

Yes, becoming a licensed "Green Badge" London taxi driver is considered one of the most difficult career paths in the global transportation sector because of "The Knowledge." This legendary training process requires prospective drivers to memorize 320 standard routes (known as "runs") and over 25,000 streets within a six-mile radius of Charing Cross. On average, it takes three to four years of intense study, often involving traveling the city on a moped with a clipboard to learn every turn, dead end, and point of interest by heart. Once training is complete, candidates must pass a series of oral examinations (known as "Appearances") with examiners who demand the quickest route between two points without looking at a map. In 2026, while apps like Waze exist, a grounded reality is that Black Cab drivers are still held to this "Gold Standard" of mental mapping, which allows them to use bus lanes and navigate gridlock far more effectively than any GPS-reliant rideshare driver. It is a rewarding but high-pressure profession that requires immense dedication and a clean criminal record.