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Browse Ifor Williams HB510XL Horse Trailers

Browse Ifor Williams HB510XL horse trailers for sale across the UK. Compare specifications, photos, and prices from trusted dealers and private sellers.

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Frequently Asked Questions About Horseboxes and Trailers

What's the difference between a 3.5-tonne and a 7.5-tonne horsebox?

A 3.5-tonne horsebox can usually be driven on a standard UK car licence (Category B) and suits one or two horses. It's compact, economical, and easy to park.

A 7.5-tonne horsebox needs a Category C1 licence, offers more payload, and often includes living accommodation - ideal for longer trips, shows, or carrying multiple horses.

Is it better to buy a horsebox or a trailer?

That depends on how and where you travel. A horse trailer is towed, cheaper to buy and run, and perfect if you already have a suitable towing vehicle. A horsebox is a self-contained vehicle - more comfortable for longer journeys, with better visibility and often on-board tack or living areas.

What should I check before buying a used horsebox or trailer?

Before purchasing a horsebox, lorry, or trailer, always:

Check the MOT, service history, and mileage.
Inspect the floor, ramp, partitions, and electrics for wear or damage.
Confirm the payload and make sure it's within your horses' combined weight.
For trailers, inspect brakes, hitch, and tyres.
Ask for proof of ownership and verify the VIN or chassis number.

For more information, see our horsebox and trailer buyers guide.