Green Motion

Here's a rundown of the car rental companies most commonly used and recommended in the UK, based on network size, availability, and customer sentiment:

The Big Players (Most Widely Used)

Enterprise Rent-A-Car – The most dominant player in the UK by a wide margin. Enterprise Rent-A-Car has the most number of locations with 441 locations across 4 countries, and it's consistently praised as the strongest all-rounder. Enterprise remains the strongest all-round provider thanks to its extensive network, vehicle selection, and overall reliability. It's also known for being convenient with local "neighbourhood" branches rather than just airports, which is handy if you're picking up locally rather than flying in.

Hertz – The other UK giant. Hertz has 371 locations in the UK. Hertz is one of the world's most popular rental companies, with a flexible cancellation policy, an extensive vehicle fleet, and a best-rate guarantee. It also runs a decent loyalty scheme, Hertz Gold Plus Rewards, which can shave a bit off your rental costs if you use them regularly.

Avis – Rounds out the "big three" for airport pickups specifically. Enterprise Rent-A-Car, Hertz and Avis are the top three recommended car rental companies at UK airports for most travellers, particularly strong across Heathrow, Gatwick, Manchester, Birmingham and Edinburgh.

Solid Mainstream Alternatives

Europcar – Another major UK presence with 146 locations in the UK, making it one of the top three by footprint alongside Enterprise and Hertz.

Budget – Popular for value-focused renters. Budget UK is one of the most affordable and widely available car rental providers in London, making it a popular choice for travellers who prioritise value for money.

Sixt – If you want something a bit nicer than the standard hatchback, this is who people turn to. Sixt stands out for luxury and executive rentals, so it's a good shout if you're after a premium or executive car rather than a basic runaround.

Alamo and National – Both are part of the Enterprise group and share its UK infrastructure. Alamo UK is one of the most popular car rental brands among families, holidaymakers, and international visitors, sharing much of its infrastructure with Enterprise Rent-A-Car and National Car Rental, so you get Enterprise-level reliability under a different badge.

Eco/Budget Niche

Green Motion – Worth knowing about if sustainability matters to you. Green Motion appeals to environmentally conscious travellers and regularly undercuts larger competitors, making it popular with budget-conscious travellers who still want access to modern and efficient vehicles. That said, do read the small print on insurance — some reviews flag that add-on costs can catch people out.

Practical Tips for the UK Market

• Comparison sites: Many Brits don't book directly with a single brand — they use comparison/broker platforms that pull deals from Enterprise, Hertz, Avis, Europcar, Sixt, Budget, and smaller local firms all at once, often bundling in excess insurance and 24/7 UK support.
• Age requirement: The legal minimum age to rent a car in the UK is 21, though some companies will include extra charges for that, so if you're a younger driver, factor this in when comparing quotes.
• Avoid airport surcharges: Avoid airport rentals as they usually charge a

Enterprise Rent-A-Car is widely considered the best all-around car rental company in the UK, boasting the highest customer satisfaction scores and a massive footprint across the country. According to consumer data from Statista, 84% of UK customers state they would happily use Enterprise again.

If you are hiring a vehicle here in the UK, the market splits clearly between highly-rated regional stars, premium global heavyweights, and budget-friendly operators.

The Hero Pick: Best Overall Experience

Arnold Clark Car & Van Rental: If you want a flawless, highly-rated experience, this is the absolute top choice. It is a dominant regional favorite (especially in Scotland and Northern England) and is consistently voted a [Which? Recommended Provider](1.1.1'](1.1.1). Why it wins: It stands out for completely transparent pricing, zero hidden fees, and an incredibly modern fleet.

Premium & Corporate Heavyweights

Enterprise Rent-A-Car: With over 400 branches across the UK, they are virtually everywhere, including all major airport terminals and city locations. Their customer service is reliably praised as friendly and efficient. Hertz: A close second behind Enterprise for brand loyalty (77% repeat customer intent). It is widely trusted by business travellers and those using the Hertz Gold Plus Rewards scheme for bypass-the-counter airport pickups. Sixt: The go-to option if you want a premium or luxury vehicle (like a Mercedes-Benz, BMW, or Jaguar). Notably, Sixt is one of the few brands with desks located directly onsite inside the terminal at London Heathrow (LHR), sparing you a shuttle bus ride.

Best for Budgets & Holidaymakers

Alamo Rent A Car: Consistently ranks highly for value for money and transparent damage records. Because it shares a parent company with Enterprise, you often get the same high-quality vehicle fleet but tailored towards affordable vacation packages. Budget / Europcar: These are the most heavily booked mass-market brands for holiday car hire. Booking through aggregators like Auto Europe or Rentalcars.com often yields much lower rates with these two than booking with them directly.

UK Car Rental Comparison

Real British Ground Intel: Insider Tips

Word on the Street

UK travel communities often advise sticking to the major global players or trusted local operators to ensure a smooth trip:

"The big multinationals are fine: Hertz, Avis, Enterprise and so on. Two to avoid almost at all costs are Drivalia and Green Motion [due to aggressive damage inspections]." — TripAdvisor Community Focus

"Apply to be a Hertz Gold card holder (it's free) and you get a 10% discount if booking direct... Avoid Green Motion, and the other obviously cheap non-major companies. Some charge a fee if you are over an hour late." — Rick Steves Europe Community

Crucial Logistics to Know

Beware Ultra-Low Cost Brokers: Brands like Green Motion or Drivalia frequently top comparison sites with dirt-cheap £5-a-day headline rates. However, local consumer forums heavily warn against them due to notorious upsells and penalizing customers for microscopic, pre-existing scratches upon return. Book an Automatic Early: The default vehicle type in the UK is a manual (stick-shift). If you cannot drive manual, you must explicitly select an automatic when booking. Automatics are in lower supply and cost significantly more. Sort Out Your Excess Insurance: Basic UK car rentals include third-party cover, but leave you with a hefty excess (deductible) of £1,000–£2,500. Instead of paying the rental desk £20–£30 a day for their "Super Waiver," buy a standalone Third-Party Excess Insurance Policy online before you travel for a fraction of the cost.

To help narrow down the perfect choice, tell me:

What city or airport are you picking the car up from? Do you require an automatic transmission? Are you looking for a compact city car or a large SUV/family vehicle?