Head to head
Ifor Williams GP vs Ifor Williams HB403
The Ifor Williams GP is rated 1.9 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams GP is rated 1.9 tonnes heavier gross.
Specifications side by side
| Ifor Williams GP | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3500kg | 1600kg |
| Axles | Tri-axle | - |
| Unladen weight | - | 767kg |
| Payload | - | 833kg |
| Internal length | - | 3.08m |
| Internal width | - | 1.30m |
Sources: Ifor Williams GP, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GP if...
- you want one that is rated 1.9 tonnes heavier gross
Ifor Williams GP, carried by UK dealers and hire companies listed on GetBrent for sale. Plant trailers are the working end of groundworks: contractors and hire firms use them to move mini diggers, dumpers and rollers between sites.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the HB403 if...
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GP and the Ifor Williams HB403?
The Ifor Williams GP is rated 1.9 tonnes heavier gross. The Ifor Williams GP is a plant trailer range; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Can I tow the Ifor Williams GP or the Ifor Williams HB403 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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