Black Cab vs Uber in London: Which Is Actually Cheaper?

Short answer: Uber is usually cheaper, a black cab is often faster, and the gap is smaller than most people assume once you account for two things nobody puts in the comparison — surge pricing, and the fact that a minicab pays London’s road charges while a black cab does not.

This page compares them on the things that actually decide it, using Transport for London’s published figures rather than estimates. Checked August 2026.

The comparison, honestly

The bus lane point is bigger than the price point

A black cab may use London’s bus lanes. A minicab may not. On a weekday afternoon across the middle of town, that is not a marginal advantage — it is the difference between moving and sitting still, and it is why experienced Londoners will often take the cab despite the higher meter.

It also interacts with how the meter works. A London taxi charges on distance or time, whichever is greater, and the time element kicks in whenever the cab drops below 10.4 mph. A cab that keeps moving in a bus lane is charging you on distance. A minicab stuck in the same traffic is burning your money on the clock too, unless you were quoted a fixed price up front.

The charge hiding inside one of these quotes

This is the part almost no comparison mentions. Licensed black cabs are exempt from both the Congestion Charge and ULEZ while actively licensed with TfL. Private hire vehicles — Uber included — are exempt from neither. They have paid the Congestion Charge since June 2020, and must meet ULEZ emissions standards or pay the daily charge.

The Congestion Charge rose to £18 a day on 2 January 2026. ULEZ is £12.50 a day for a non-compliant vehicle. Those costs never appear on a taxi meter. They can, and generally do, sit inside a minicab’s pricing.

That does not mean a minicab is worse value — most Uber vehicles in London are electric or hybrid and therefore ULEZ-compliant, so the £12.50 usually does not apply. But the Congestion Charge does, and it is a real structural cost sitting on one side of this comparison and not the other.

Compare pre-booked transfer prices

A third option that beats both for airport runs: a fixed price agreed in advance, with the driver meeting you.

Compare pre-booked transfer prices

When the cab wins

• It is raining, it is New Year’s Eve, or a venue has just emptied. The tariff cannot surge. The app can.
• You are crossing central London at rush hour and the bus lanes are moving.
• You use a wheelchair. Every licensed London taxi is accessible, drivers must carry you seated in your chair at no extra charge, and the meter must not start until you and your mobility aids are secured.
• You have a lot of luggage or a lot of people. No surcharge for either.
• You want a driver who knows where they are going without a phone on the dashboard.
• Your phone is dead. You cannot book an Uber without it. You can raise an arm.

When the app wins

• Demand is normal and the journey is long. This is the typical case, and the saving is real.
• You are outside the black cab meter area. Beyond Greater London a taxi fare is negotiable, not metered — you must agree it before setting off. An app quote removes that conversation entirely.
• You want a price before you commit. A minicab operator is required to give an accurate estimate before the journey starts; a meter tells you at the end.
• You are in outer London late at night, where there simply are not many cabs to hail.
• You want a record of the trip tied to an account, which matters more than people admit if something goes wrong.

The legal difference, which is not a technicality

A black cab can be hailed. A minicab cannot — it must be pre-booked through a TfL-licensed operator. A private hire driver who approaches you in the street or picks you up unbooked is committing an offence. Touting is criminal under section 167 of the Criminal Justice and Public Order Act 1994, and TfL will normally revoke the driver’s licence on conviction.

This matters because the danger is not the fare. TfL’s own wording is that unbooked minicabs are illegal, uninsured to carry passengers, and pose a serious risk to their passengers. If a car pulls up offering you a ride you did not book, it is not a cheaper Uber. It is not an Uber at all.

Two checks, both of which take seconds. A licensed taxi carries a white licence plate on the rear and the driver wears a green or yellow badge. A minicab must display licence discs on the front and rear windscreens, the driver must wear photo ID, and your booking confirmation must already contain the vehicle registration, the driver’s first name, their licence number and their photo. If the car outside does not match the confirmation on your phone, do not get in.

So which should you take?

Book the app when demand is ordinary and you are going a decent distance. Raise your arm when it is peak, wet, late, or you are crossing town in traffic. For an airport run with luggage and a fixed arrival time, neither is really the right answer — a pre-booked transfer at an agreed price is.

And if the deciding factor is simply the number: our London taxi fares guide has TfL’s full published tariff, including what a journey of each length actually costs on each of the three tariffs.

Going to or from an airport, start with Heathrow to central London, every option priced. Worried about whether the car that turned up is legitimate, see how to check your driver is licensed.

Sources

Tariffs, extras and the minimum fare are from TfL’s taxi fare card effective 25 April 2026. Congestion Charge figures are from TfL notice 02/26, effective 2 January 2026. Exemptions, licensing requirements and the accessibility rules are from TfL’s published guidance, its private hire abstract of laws and the London taxi driver handbook. We have not quoted an Uber price anywhere on this page, because Uber’s pricing is dynamic and any figure would be out of date before you read it.

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