Head to head
Bateson Derby vs Ifor Williams HB511
The Ifor Williams HB511 is rated 1 tonnes heavier gross and is 82cm (2.5ft) longer inside. The Bateson Derby is 325kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams HB511 is rated 1 tonnes heavier gross.
- Unladen weight: the Ifor Williams HB511 weighs 325kg more empty.
- Internal length: the Ifor Williams HB511 is 82cm (2.5ft) longer inside.
- Internal width: the Ifor Williams HB511 is 29cm wider inside.
Specifications side by side
| Bateson Derby | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 1,700kg | 2,700kg |
| Unladen weight | 675kg | 1,000kg |
| Internal length | 2.70m | 3.52m |
| Internal width | 1.50m | 1.79m |
| Payload | approx. 1,025kg | - |
| Brakes | - | Braked |
Sources: Bateson Derby, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Derby if...
- you want one that is 325kg lighter empty
A light double horse trailer that can be towed by a large saloon car rather than needing a 4x4, thanks to its low unladen weight. It suits owners moving one or two horses locally who want to avoid buying a heavier, purpose-built tow vehicle.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Buy or hire the HB511 if...
- you want one that is rated 1 tonnes heavier gross
- you want one that is 82cm (2.5ft) longer inside
- you want one that is 29cm wider inside
The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Listed by
- Trek-Trailers Suffolk - Bury Saint Edmunds
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Bateson Derby and the Ifor Williams HB511?
The Ifor Williams HB511 is rated 1 tonnes heavier gross and is 82cm (2.5ft) longer inside. The Bateson Derby is 325kg lighter empty. The Bateson Derby is a lightweight rear-unload double horse trailer; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Bateson Derby or the Ifor Williams HB511?
The Bateson Derby. It is 325kg lighter empty than the Ifor Williams HB511.
Can I tow the Bateson Derby or the Ifor Williams HB511 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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