Car Seats & Travel / 13 May, 2025 / Ellie Thompson
Four kids. One back seat. That’s the scenario that sparked a revolution in family car safety, because when mechanical engineer Kevin Macliver welcomed baby number four back in 1995, he quickly realised what thousands of parents face daily: standard cars aren’t built for big families.
Instead of giving up and buying a bus, Kevin created the answer: Multimac – a sleek, safe, and brilliantly clever multi-child car seat system that fits three or even four children across the back seat, without sacrificing style or safety.
Fast-forward almost 30 years, and Kevin (with his daughter Minty riding shotgun in the business) has sold 10,000+ Multimacs worldwide. Still family-run. Still made in Britain. Still keeping chaos under control.
Let’s get real: most family cars simply can’t legally or safely accommodate more than two standard child seats. That means carpool dramas, endless seat-juggling, and moments when a child ends up without a proper seat altogether.
The UK law states that every child under 12 years old or under 135cm tall must use a child car seat. No lap-sitting. No seatbelt-sharing. It’s illegal, unsafe, and (frankly) terrifying. That’s where Multimac comes in.
With Multimac, you can transform the back seat of almost any car into a safe, super-comfy zone for three or four children, from newborns up to 12 years old. Forget upsizing to a seven-seater: Multimac fits in most standard cars, keeping kids within reach and away from the rear crash zone.
Multimac has seven seats in its range in varying widths to suit all cars. Oh, and it’s R129 approved, meaning it meets the latest and toughest European child safety regulations.
Yes – 100% legal, certified, and safe. The car seats have passed all the relevant UK and EU safety tests, meeting and exceeding the R129 (i-Size) regulation—the current gold standard for child car seats in the UK.
But it’s not just about ticking boxes. Designed, crash-tested, and manufactured in Britain, it proudly carries the Made in Britain certification, making it not just legal but a true homegrown hero.
In a word: very.
Multimac’s aluminium frame is engineered to absorb crash energy and reduce forces on your child’s body. It’s fitted with a five-point harness (just like racing drivers use), which evenly distributes energy during a crash, protecting the neck, chest, and spine.
Even better? It’s tested under the strictest Swedish crash tests (yes, the Swedes don’t mess around when it comes to safety), and features side-impact protection, energy-absorbing chest pads, and specially designed headrests. It’s basically a Formula 1 seat for your toddler, so you can enjoy complete peace of mind.
Multimac can safely carry children from birth up to around 12 years old, with each seat holding up to 36kg (approximately 5.5 stone). That’s well above average for most standard child seats, meaning your kids won’t outgrow it anytime soon.
The seats grow with your children and offer optional baby cradles or adjustable headrests depending on age and size. It’s the seat that lasts – and adapts.
Installation is surprisingly simple. It attaches using two super-strong tether straps that anchor to your car’s existing seatbelt points. These straps are built to withstand 5.4 tonnes of force (compared to Isofix’s 0.4), so they’re strong enough to keep your child secure, even in extreme impacts.
You can fit or remove the whole seat in about five minutes, and if DIY isn’t your vibe, Multimac has certified fitting agents across the UK to do it for you.
Multimac doesn’t just work hard—it looks good doing it. Upholstered by automotive trimmers who work with Bentley and Rolls-Royce, you can match your car’s interior or go wild with custom colours (hello, hot pink leather).
Multimac keeps families moving—and the planet in mind. Over 87% of each seat is fully recyclable, dramatically cutting down on landfill waste. From its sturdy aluminium frame to foam-free fabric options, Multimac reduces your carbon footprint while keeping your back seat clean and your conscience clear.
It’s one of those “why doesn’t everyone know about this?!” parenting hacks that instantly makes your life easier. And we are here for it.
Visit multimac.com to explore the range, get expert fitting support, or request a quote for your car model. Follow @multimac_seats on Instagram for tips, updates, and adorable car seat selfies that might actually make the school run feel like less of a mission.
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