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CATERHAM SEVEN 420R RACE CAR

The Seven Championship UK is the pinnacle of Caterham Seven Motorsport and Britain’s only nationally recognised Seven race series. It’s the top end of the Caterham Championship and is the only Caterham series to race on race slick tyres with the option of full Avon wets also. The speed of this car is similar to a GT-4 race car and with the handling to match make it one of the greatest one make race series in the UK.

“What exactly does that mean” we hear you ask…. To put it simply, this is the racing series to find the Official British Caterham Champion. No other Seven-based racing series is recognised in this capacity – plus, like all of our Championships, it’s fully run by the manufacturer.

Caterham has a well-established history when it comes to racing, we’ve been at it since day one – so naturally it’s one of the most competitive and exciting competitions going. To keep the playing field level, every car on the grid is identical, and the car is question is specifically designed for the competition.

A 180bhp 2.0 Caterham Motorsport Tuned Engine, paired to a six-speed sequential gearbox, is nestled within the bespoke racing chassis. One seat, no lights, this thing means business. Unlike other national racing series, this is pretty much out-of-the-box competition, meaning the season is included with the cost of the car, and there is no need for expensive testing and set ups. It’s all down to the skill of the driver.

Technical Details at a glance

  • Seven 420R race car in component form
  • Registration for Seven Championship UK
  • Full season race entry
  • Designed exclusively for track use- not road legal
  • Caterham Motorsport 2.0 Ford Duratec engine
  • 6 speed sequential gearbox
  • Limited slip differential
  • Dry sump oil system
  • Catalytic converter
  • De Dion rear suspension
  • Race springs and dampers
  • Ventilated front discs and quad piston calipers
  • Uprated rear brake discs and calipers
  • 13” Apollo alloy wheels
  • Avon ZZR tyres
  • Race ratio steering rack
  • FIA approved race roll cage (and padding)
  • Aluminium tonneau boot cover
  • Dashboard and analogue instruments
  • Lowered floor
  • 6 point race harness
  • Driver’s side and rear view race mirrors
  • Battery master cut-off switch
  • Brake bias valve (lever type)
  • Uprated brake master cylinder
  • Plumbed in fire extinguisher
Caterham 420r Racer Car Gallery Image 1 (1) - Williams Automobiles

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At Williams Lotus, we are passionate about delivering an exceptional ownership experience for Lotus drivers and enthusiasts. Having been an official Lotus dealer for over 30 years, and now one of the UK's leading independent Lotus specialists, our team combines decades of experience with a genuine passion for the brand to provide expert advice and support at every stage of ownership.

Over 25 Years of Lotus Expertise

Our relationship with Lotus spans more than a quarter of a century. As a former official Lotus dealership, we supplied, serviced and supported generations of Lotus sports cars, building an unrivalled depth of knowledge that continues today as an independent Lotus specialist.

Whether you're searching for a beautifully maintained Elise, Exige, Evora, Emira or another iconic Lotus model, our experienced team will help you find the right car for your needs. Every vehicle we offer is carefully selected, thoroughly inspected and prepared to the highest standards before it reaches our showroom.

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Our commitment to our customers extends long after they've collected their car. Our highly experienced technicians provide specialist servicing, maintenance, diagnostics and repairs, using genuine and OEM-quality parts to keep your Lotus performing at its very best.

We also offer a comprehensive range of upgrades and enhancements, including suspension improvements, geometry setup, performance modifications, exhaust systems and bespoke personalisation. Whether your Lotus is a weekend road car, a touring companion or a dedicated track machine, we have the expertise to help you get the very best from it.

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Having worked with virtually every modern Lotus model over the past 25 years, we understand these cars better than most. From routine servicing to complete rebuilds and performance upgrades, our specialist knowledge has earned the trust of Lotus owners from across the UK.

Many of our customers have been with us for years, returning time and again because they value our honest advice, technical expertise and attention to detail.

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Williams Automobiles has been family-owned since 1911 and is proud to be the UK's oldest family-run motor business. Our reputation has been built on exceptional customer service, specialist knowledge and a genuine enthusiasm for the cars we represent.

Whether you're looking to purchase your next Lotus, maintain a cherished example or enhance its performance, you can be confident your car is in the hands of a team that has dedicated more than 25 years to the Lotus marque.

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