Head to head
Brian James C4 vs Ifor Williams HB403
The Brian James C4 is rated 1 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Brian James C4 is rated 1 tonnes heavier gross.
Specifications side by side
| Brian James C4 | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 2600kg | 1600kg |
| Axles | Twin | - |
| Size | 2m x 4.5m loading area | - |
| Unladen weight | - | 767kg |
| Payload | - | 833kg |
| Internal length | - | 3.08m |
| Internal width | - | 1.30m |
Sources: Brian James C4, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the C4 if...
- you want one that is rated 1 tonnes heavier gross
Brian James C4, carried by UK dealers and hire companies listed on GetBrent for hire. Car transporters in this class are hired and bought by track-day drivers, classic car owners and recovery firms who need to move a vehicle without driving it.
Listed by
- Cobham Trailer Hire - Cobham, East Horsley
- R M Trailer Centre - Middlesbrough, North Ormesby
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 Brian James C4 and the Ifor Williams HB403?
The Brian James C4 is rated 1 tonnes heavier gross. The Brian James C4 is a car transporter trailer; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Can I tow the Brian James C4 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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