Child seat or cargo bike? How to carry your kids by bike in London
One child? You may not need a cargo bike at all. Two or more? You probably do. How to pick the right set-up for your family.
For one child, a standard-size e-bike with a fitted child seat is lighter, cheaper and far easier to store — that's our CYCL compact, at £125 a month. For two children a long-tail cargo bike is the everyday workhorse; for two to three little ones a front-box keeps them in view and out of the weather. All need no licence, and with a month-to-month subscription you can switch as your family grows.
The four ways to carry kids by bike
| Set-up | Carries | Typical ages | Best for |
|---|---|---|---|
| Rear child seat on a standard e-bike | 1 child | ~9 months (sitting unsupported) to ~22 kg | Nursery run, one-child families, tight storage at home |
| Front-mounted mini seat | 1 small child | ~9 months to ~15 kg | Short rides with a toddler who wants the view |
| Long-tail cargo bike | 2 children on the rear deck | Toddler to primary school | The everyday school run plus bags and the shop |
| Front-box (bakfiets) cargo bike | 2–3 little ones in the box | Babies (with suitable seat) to ~6 | Keeping small kids in view, weather cover, the big shop |
Trailers exist too, and are road-legal — but many London parents prefer seats and boxes that keep children up at handlebar height and in conversation range, which is where cargo bikes shine.
When is a child seat enough?
If you're carrying one child and the usual load is a school bag and a backpack of shopping, a child seat on a standard-size e-bike does the job without the size and weight of a cargo bike. It fits in a hallway, handles like a normal bike, and costs less — our CYCL compact with a fitted child seat is £125 a month, and it's built with more carrying capacity than a typical e-bike, so seat plus panniers is fine.
Rear seats suit children from around nine months — once they can sit unsupported and wear a helmet — up to roughly 22 kg, which is about four to five years old. After that, most families either move the child to their own bike or step up to a long-tail deck.
When do you need a cargo bike?
Two or more children, a child over seat weight, or a genuine cargo habit (weekly big shop, scooters and kit in tow) — that's cargo bike territory:
- Long-tail — two kids sit on the rear deck behind you. Rides closest to a normal bike, parks in a normal rack, takes the school bags on panniers. The everyday default for school-run families.
- Front-box — two to three little ones sit in the box in front, where you can see them and a rain cover keeps them dry. Bulkier to store, unbeatable with small children.
Both are arriving in the fleet soon — £210 for the long-tail, £250 for the front-box, with seats and harnesses set up for your children at handover. Register your interest and we’ll contact you as soon as they land.
What about safety?
Whatever the set-up, the basics are the same: a proper seat with a harness and footrests (feet must never reach the wheel), helmets recommended for every passenger, hydraulic disc brakes for the extra weight, and a first ride without the kids to get used to the handling. Legally, passengers are allowed on any bike built or adapted to carry them, and no licence is needed for any of the bikes above. We cover loading, strapping in and braking at every handover.
Don't overbuy — you can switch
The most common mistake is buying a £5,000 front-box for a family that only ever carries one child to nursery. On a month-to-month subscription the decision stops being permanent: start with the compact and a child seat, and move up to a long-tail or front-box at renewal when the second child arrives or the first one outgrows the seat. Tell us your family and we'll match the bike — and re-match it next year.
Try it with your family, risk-free
Tell us your family and we’ll come back within 2 working hours with the bike, the price and a collection slot at our West London workshop. From £125 a month, no licence, no minimum term.
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