Can I Tow a Caravan Legally in the UK?

You have got the caravan, you have got the tow car, and you have got that familiar pre-trip thought: am I about to become a roadside anecdote?

The legal side of towing in the UK is not actually mysterious - it is just scattered across licence categories, weight plates, and a handful of rules that people love to turn into pub myths. Let us calm it down and get you to a clear answer.

Can I tow a caravan legally? Start with your driving licence

For most people, the big question is not the caravan, it is the photocard in your wallet.

If you passed your car test on or after 1 January 1997, you usually have category B. The modern rule is reassuringly simple: with category B you can tow a trailer (including a caravan) up to a MAM of 3,500kg, as long as the combined MAM of car and caravan is no more than 3,500kg.

If you passed before 1 January 1997, you will often have B+E (or an older equivalent entitlement). In plain English, that normally gives you more towing headroom - but you still have to respect the towing limits of your particular car and caravan.

The easiest way to avoid guessing is to check your licence categories and any restriction codes. If you discover you are category B and your planned outfit busts the 3,500kg combined MAM limit, you are not being punished by the universe. You simply need a different match of car and caravan, or you need to gain the appropriate entitlement.

The weights that matter (and why everyone gets cross about them)

Most legal towing questions come down to one thing: what you think something weighs versus what the law cares about.

MAM - the number the law loves

MAM means Maximum Authorised Mass. You will see it on the caravan plate and in the car documentation. It is effectively the legal maximum the vehicle or caravan is allowed to weigh when loaded.

A key point that trips people up: towing rules often use MAM (plated limits), not what you happen to be carrying on a given day. So saying, “But we are travelling light” does not always rescue you if the plated numbers exceed what your licence allows.

The car side - it is not just about engine power

Your car has two important towing figures:

First is the maximum braked towing capacity - that is the heaviest braked trailer the car is allowed to tow. Most caravans are braked trailers.

Second is the Gross Train Weight (sometimes called GTW) - the maximum combined weight of the car and what it is towing.

If the caravan MAM exceeds the car’s braked towing limit, you have a hard no, regardless of how confident you feel or how “fine it pulled last time”. If the combined actual weights exceed GTW, also a hard no.

The caravan side - MTPLM and payload

Caravans often quote MTPLM (Maximum Technically Permissible Laden Mass). In day-to-day terms it functions like the caravan’s MAM - the maximum it can weigh when loaded.

Your payload is the difference between the caravan’s empty weight and its MTPLM. Payload is where good intentions go to die: awnings, movers, gas bottles, battery, chairs, food, and the “just in case” box all live here.

Legally, you must not exceed the caravan’s plated maximum. Practically, if you are always running on the limit, towing will feel less relaxed.

“Kerbweight ratio” is not law - but it can still be wise

You will hear the 85% guideline a lot: caravan MTPLM should be no more than 85% of the tow car’s kerbweight, especially for beginners.

That is not a legal rule. Nobody is waiting at the services with a calculator and a disappointed look.

It is, however, a decent confidence guideline because it nudges you towards a stable-feeling combination with more margin for wind, overtakes, and real-life loading.

If you are above 85% it does not automatically mean you are unsafe or illegal. It does mean you should be more deliberate: loading, tyre pressures, speed discipline, and honest appraisal of how it feels.

Noseweight: legal, practical, and often misunderstood

Noseweight is the downward force the caravan hitch places on the towball. Too low can contribute to instability. Too high can overload the rear axle of the car, affect steering and braking, and potentially exceed limits.

There are usually two noseweight limits: one for the car and one for the towbar. The legal maximum is the lower of the two. You then set the caravan’s loading so the actual noseweight is within that limit.

This is where people get a bit theatrical - as if the correct noseweight is a single magic number. Realistically, you are aiming for a safe range that suits your outfit. Many outfits tow well at around 5% to 7% of the caravan’s actual loaded weight, but the real boss is always the plated limit.

If you only do one “grown-up” towing check this month, do your noseweight properly. It takes minutes and makes a noticeable difference.

Towbar legality: plates, approval, and the awkward questions

If your car needs a towbar, it must be suitable for the vehicle and correctly fitted. Modern cars typically require type-approved towbars and appropriate electrics (7-pin or 13-pin) so the caravan lights work correctly.

Legally, your lights must work. Practically, you also want the charging and fridge circuits to behave, if your caravan uses them.

If you have bought a car with a towbar already fitted, treat it like any other second-hand mystery. Get it inspected if you cannot verify the fitting and its rating. A towbar has its own plate with limits, including a maximum towing capacity and a maximum noseweight.

Speed limits: yes, they are lower with a caravan

If you tow a caravan in the UK, the national speed limits change.

On single carriageways, the limit is 50mph.

On dual carriageways and motorways, the limit is 60mph.

Those limits apply even if the signs say 70mph. This catches out perfectly decent people who are not trying to be reckless - they are just following the flow.

If you tow in Wales, remember that many roads default to 20mph in built-up areas and 30mph on other restricted roads. It is not towing-specific, but it does change the rhythm of a tow day.

Mirrors, number plates, and the simple “don’t get pulled” stuff

Your caravan must have a number plate that matches the towing vehicle. It needs to be the correct format and legible.

You must also have a clear view behind. For most caravans, that means extension mirrors. They are not a fashion accessory. If you cannot see down the sides and behind the caravan, you are not meeting the requirement.

The good news: fit decent mirrors once, adjust them carefully, and you will wonder why you ever tried to wing it.

Loading and tyres: legality meets physics

Overloading is one of the most straightforward ways to become illegal without realising it. It is also one of the most preventable.

If you are unsure about your actual weights, weigh the car and caravan. Not guess. Not “it feels fine”. Weigh. It ends arguments instantly and replaces anxiety with numbers.

Tyres are part of this picture too. You need tyres that are in good condition, correctly inflated for the load, and within age and wear limits. Caravans can sit for long periods, so cracking and ageing matter even if the tread looks decent.

None of this is glamorous. It is also what makes towing feel calm rather than tense.

Passengers and payload: the sneaky way combinations go illegal

Here is a common scenario: you check the caravan plate, you check the car brochure, everything looks fine. Then you load the boot with awning poles, fill the car with family, and add bikes.

Your car has its own payload limit. If you overload the car, you can exceed axle weights and the vehicle’s maximum permissible mass. You might also exceed Gross Train Weight once the caravan is on.

This is why “it tows it” is not the same as “it is legal”. The engine will happily pull plenty of illegal situations.

So how do you answer it for your exact outfit?

If you want the non-dramatic, actually useful approach, work through it in this order.

First, confirm your licence entitlement and whether you are constrained by the 3,500kg combined MAM rule.

Second, compare the caravan MTPLM/MAM to the car’s maximum braked towing capacity. The caravan’s plated maximum must not exceed the car’s limit.

Third, check the car’s Gross Train Weight and make sure your real-world loading will not exceed it.

Fourth, set and verify noseweight within the lower of the car and towbar limits.

Finally, sanity-check the basics: lights, mirrors, tyres, and number plate, then drive to towing speed limits, not traffic speed limits.

If you want a calm second opinion rather than a forum pile-on, CaravanVlogger at https://caravanvlogger.co.uk is built for exactly this kind of clarity without the scare tactics.

The bit nobody says out loud: legal does not always mean comfortable

You can be fully legal and still have a tow that feels like hard work. You can also be technically within limits but loaded in a way that makes the outfit twitchy.

That is why experienced towers talk about stability, loading discipline, and leaving margin. They are not being dramatic. They are trying to make your holiday start on the driveway, not halfway down the M6 with your shoulders up around your ears.

A helpful closing thought: if a check makes you feel calmer rather than merely compliant, it is probably worth doing - because confidence is not bravado, it is fewer surprises.

Where next?

If this page resonated, the next helpful reads are:

👉 What Actually Causes Snaking?
👉 Do I Need ATC or Sway Control?

Both continue the story calmly, without scare tactics.