A mate of mine got offered a job running a 7.5t crew-cab tipper for a plant hire firm last year. Good money, regular hours. He's been on Cat B for twelve years — cars, vans, nothing bigger than a 3.5t Transit. His new employer assumed he had the right licence because he'd driven 7.5t box vans "in a previous job." Turns out he hadn't, and the previous employer had just never checked. Nobody lost their licence over it but it was closer than it looked.
Category C1 sits in a gap that most drivers and a lot of small operators don't think about. Not everyone who drives something bigger than a Transit needs a full Cat C (Class 2) licence. But equally, a Cat B licence doesn't cover everything with four wheels and a gearstick. C1 is the middle ground — and a surprising number of vehicles fall into it.
What Category C1 actually covers
C1 covers vehicles with a maximum authorised mass (MAM) of between 3,500kg and 7,500kg. That's the weight band between the top of Cat B entitlement and the bottom of full Cat C. You can tow a trailer up to 750kg MAM on a C1 licence — for anything heavier, you'd need C1+E, which is a separate entitlement.
The 7,500kg upper limit is the key number. A vehicle that's 7.5 tonnes gross — like many rigids used for local deliveries, specialist plant, welfare units, or catering vehicles — falls squarely into C1 territory. If that vehicle weighs over 3.5t but under 7.5t, you need C1 as a minimum to drive it legally.
A Cat B licence — the standard car licence — covers vehicles up to 3.5t MAM. That's it. There's no crossover. Plenty of 7.5t vehicles look similar to large vans from the outside, but the licence requirement is determined by the MAM on the plate, not what it looks like or how heavy it is on any given day when it's running empty.
Who ends up needing C1 without expecting to
More categories of vehicle than people think. The classic examples:
- 7.5t rigid trucks for local delivery work — a lot of pallet network subcontractors and last-mile operations use them
- Crew-cab tippers in plant hire and construction — common on groundworks sites
- Welfare units and toilet units towed or self-propelled on larger chassis
- Catering trucks and mobile bar units for events
- Larger ambulances and specialist patient transport vehicles
- Horse boxes and livestock transporters over 3.5t
- Large motorhomes — some high-spec motorhomes with slide-outs sit over 3.5t MAM
The last one catches a lot of private owners out. You bought a motorhome on your car licence and drove it for years without incident. Then you find out it's 4.2t MAM and you've needed a C1 the entire time. DVSA aren't out there stopping motorhomes on the basis of licence checks, but if you have an accident and the insurance investigates, the MAM question is going to come up.
How C1 sits on your licence if you already hold Cat C
If you've got a full Cat C licence — Class 2, which covers rigid goods vehicles over 7.5t — C1 entitlement is included automatically. C1 is a subset of Cat C. You don't need a separate C1 test if you already have C. This is worth knowing because some hirers and agencies ask specifically about C1 and drivers with Cat C sometimes think they need to do something additional. They don't.
C1+E (C1 with trailer) is similarly a subset of Cat C+E — the full Class 1 artic licence. If you've done your Class 1, you have C1+E as part of it.
The issue is for drivers who only have Cat B. Their licence doesn't include C1. They need to get it added — which means a test.
Getting a Category C1 — the test process
To add C1 to a Cat B licence, you need to pass a theory test (if you haven't already done one for C, C+E, or C1 in the past) and a Category C1 practical driving test. The minimum age for C1 is 18 years.
The practical test is conducted in a C1 vehicle. Most test centres that deal with C and C+E will also cover C1, but it's worth checking — not all of them have appropriate test vehicles, and some training schools prioritise full Cat C over C1-only training.
The test format is similar to a Cat C practical: a show-me-tell-me vehicle safety question, a reversing exercise, and general road driving assessed by a DVSA examiner. The reversing exercise for C1 is typically an uncoupled manoeuvre — parking, bay reversing — rather than the coupling/uncoupling element you'd get with C1+E or C+E.
If you're going for C1 as a stepping stone to full Cat C eventually, it's worth having the conversation with your training provider about whether it makes more sense to go straight for Cat C. C1 training isn't massively cheaper, and if you're going to need Cat C for work within the next 12 months, you might as well cover the full vehicle weight range in one go.
The EU 561/2006 and tachograph question for C1 vehicles
This is where C1 drivers often assume things are simpler than they are. The threshold for EU 561/2006 drivers' hours rules — and for the tachograph requirement — is 3.5t MAM for goods vehicles. Not 7.5t. Not the Cat C threshold.
So a 4.5t C1 vehicle carrying goods is in scope for 561/2006 and needs a tachograph fitted (or if not fitted, manual records under the GB domestic rules depending on the specific vehicle type and use). The licence category doesn't determine the tachograph requirement. The vehicle's MAM and its use does.
This catches C1 drivers who think the tachograph rules only apply to full Cat C vehicles. They don't. If you're driving a 6.5t rigid delivering parcels, you're in scope for 561/2006. Your daily driving limit is 9 hours (extendable to 10 hours maximum, twice a week). You need to take a 45-minute break after 4.5 hours of cumulative driving. And your employer — or you, if you're self-employed — needs to download the tachograph card at least every 28 days.
I've seen small operators running C1 vehicles, maybe two or three on local delivery work, who assumed tachograph rules didn't apply because the drivers weren't on "proper HGV licences." That's not how the regulation works. The operator licence and the tachograph obligation are separate questions from the licence category of the driver.
Medicals — does C1 require a Group 2 medical?
Yes. Category C1 is a Group 2 licence entitlement, same as Cat C and Cat C+E. That means you need a satisfactory Group 2 medical examination, completed on a D4 form by a registered GP or occupational health physician, before DVLA will issue C1 entitlement.
Group 2 medical standards are more stringent than the Group 1 standards that apply to car licences. Your eyesight, blood pressure, and various medical conditions are assessed to a higher threshold. The D4 form covers eyesight (including field of vision), neurological history, cardiovascular health, diabetes, and other conditions that DVLA has determined carry additional risk for drivers of heavier vehicles.
This is worth factoring into the timeline if you're adding C1 to your licence. Booking the medical, getting the D4 signed, and having DVLA process the application takes time. If you're starting a new job in three weeks and need C1, you might not have enough runway. DVLA processing times vary, but the medical and application stage alone is typically several weeks minimum.
C1 vehicles and operator licensing
If you're an operator running C1 vehicles for hire or reward — i.e., you're getting paid to carry someone else's goods — you need an operator's licence. The O-licence threshold is 3.5t MAM for goods vehicles used in hire-and-reward work. Same as the tachograph threshold.
Own account operators (carrying your own goods in your own vehicles) also need an O-licence above 3.5t. The restricted licence covers own-account work. The standard national or standard international licence covers hire-and-reward.
Running a couple of C1 vehicles without the appropriate O-licence is an offence. It doesn't get noticed often on local work, but DVSA enforcement at weighbridges and roadside checks asks about operator licence compliance as a matter of course. And if you're running without one, the OCRS and Traffic Commissioner consequences are the same as for any other O-licence breach.
The agricultural exemption overlap that catches C1 operators
There are a handful of specific exemptions from the EU 561/2006 scope that apply to C1-weight vehicles, and the agricultural exemption is the one most likely to cause confusion. Under Article 13 of 561/2006, vehicles used for agricultural, horticultural, forestry, farming or fishery purposes in carrying goods within a radius of 100km of the operator's base can be exempt from the regulation.
That's a 100km radius, not 100km journey. The exemption exists but it's narrower than a lot of agricultural operators think. The 100km is from the home base, measured in a straight line. If your route takes you outside that circle at any point, the exemption doesn't apply for that journey.
And even where it applies, it's an exemption from 561/2006 — not from the tachograph requirement entirely. Vehicles that need a tachograph fitted by law still need it fitted. The exemption affects whether the hours rules apply, not whether the equipment is required.
Why C1 doesn't appear on some drivers' licences at all
If you got your full car licence before January 1997, you have C1 entitlement automatically on your licence — it was added to pre-1997 licences as a legacy entitlement when the European driving licence categories were introduced. Check code 79 on the back of your licence: if it says C1(79), that means C1 up to 7.5t with a restrictor condition. If you see a plain C1 without the 79 code, you've got full C1 entitlement.
Drivers who passed their car test after 1997 don't automatically have C1. It's a separate test and a separate entitlement. This is why a driver who's been on the road for 15 years on Cat B can still find themselves needing a C1 test to drive a 7.5t vehicle legally.
Worth digging out the plastic card and reading the back if you're not sure. The entitlement codes are small and easy to miss, but they tell you exactly what you're licensed to drive.
One final thing about C1 and insurance
Your motor insurance needs to match your licence entitlement and the vehicle you're driving. Operating a C1 vehicle without the correct endorsement on your policy, or without your employer knowing you're driving a vehicle that requires C1, creates a coverage gap. The policy might still pay out in a third-party situation under the Road Traffic Act 1988, but your own vehicle damage and liability position is murkier than it should be.
Employers running C1 vehicles should be checking licence entitlements as part of induction. Not just "have you got a licence" — "have you got C1, or the pre-1997 entitlement, or Cat C?" That's a thirty-second DVLA online check and it closes the gap that caught my mate out.
If you're organising your own fleet compliance and want a straightforward way to track hours across C1 and Cat C vehicles, ShiftOwt handles 561/WTD compliance for mixed fleets — £5.99/mo for drivers, agency pricing on request.