Tipping in the UK is much more relaxed than in the U.S. and is not mandatory, but it is appreciated for good service. For a standard airport transfer, the most common practice is to round up the fare to the nearest £5 or £10. For example, if the pre-booked fare is £52, many passengers will pay £55 and tell the driver to "keep the change." If the driver has been exceptionally helpful with heavy luggage, navigated difficult traffic, or waited during a flight delay, a tip of £3 to £5 is considered a very generous gesture. In 2026, most taxi apps like Uber or Bolt allow you to add a tip digitally after the ride, but for private car hires or traditional black cabs, a small cash tip remains the most direct way to show your appreciation for a smooth journey.