The Baby Checklist
Double & Twin Buggies
Duet Double Buggy

Mountain Buggy

Duet Double Buggy

6.7/10 overall

From £699.00

A side-by-side double buggy built deliberately narrow so it still fits through a standard front door and supermarket aisle.

Reviewed by SepehrNot yet hands-on tested — based on research & published specs
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Most double buggies force a trade-off between two full-size seats and a pushchair that actually fits through doorways. The Duet is Mountain Buggy's answer to that specific problem: a side-by-side format kept narrow enough to clear a standard UK front door and most shop aisles, which the wider tandem-style doubles in this category (iCandy Peach 7 Double, Bugaboo Donkey 5 Twin) generally cannot manage without turning sideways.

Against the Out n About Nipper Double V6, the comparison is really about terrain versus town use. The Nipper is built for off-road pushing with big air-filled wheels and a wide wheelbase, which is genuinely better on gravel and muddy paths, but that width is the exact problem the Duet is designed to avoid. If daily use is mostly pavements, buses and shop doorways rather than trails, the Duet's narrower footprint is the more practical choice day to day.

From-birth use isn't included out of the box — a separate carrycot or the Heritage Carrycot Plus bundle is needed to take a newborn, priced as an add-on rather than bundled as standard the way some competitors configure it. That's a real cost consideration if both children need from-birth support at once, and buyers should budget for the bundle rather than the base buggy price alone. Against the Ickle Bubba Venus Prime Double, which is priced as a budget option from the outset, the Duet sits at a noticeably higher price point but with sturdier build quality and better resale value typical of the Mountain Buggy range.

This suits parents doing a lot of on-foot urban walking with two children close in age, particularly where narrow doorways or public transport are a daily factor. Families who need full from-birth capability for both seats immediately, or who push mostly off-road, are better served by a pram with an included carrycot or the Nipper's off-road wheelset respectively.

What we liked

  • Narrow side-by-side design fits through standard doorways unlike most doubles
  • Single-action fold is straightforward for one adult to manage
  • Sturdy Mountain Buggy build quality with strong resale value

Where it falls short

  • From-birth use needs a separate carrycot bundle, adding to the base price
  • Not designed for off-road terrain the way the Nipper Double V6 is
  • Higher price point than budget doubles like the Venus Prime Double

Specs

Fold
Single-action fold
Width
Narrow enough for a standard front door
Format
Side-by-side double buggy
From birth
Requires separate carrycot or Heritage Carrycot Plus bundle
Range tier
Heritage Collection (Luxury Collection also available)
Bundle options
Buggy-only, travel system, or twin travel system bundle

How we scored it

Manoeuvrability & Width

How easily the buggy handles kerbs, shop aisles and standard UK doorways, and how manageable it is for one adult to push and steer one-handed.

8/10

Purpose-built narrow width clears standard doorways where tandem doubles like the Peach 7 or Donkey 5 Twin cannot.

From-Birth Versatility

How well the buggy adapts across an age gap between siblings or twins — carrycot/car seat compatibility from newborn, seat configurations, and how long it stays useful as children grow.

5/10

From-birth use requires buying the separate Carrycot Plus bundle rather than coming included, unlike some tandem rivals.

Value for Money

What you get for the price versus rivals in this list — build quality, included accessories, and resale value weighed against RRP.

7/10

Weighted by importance for this category — see our editorial policy for how we test.

The alternative

City Select 2 (Double)

Baby Jogger

City Select 2 (Double)

A modular single-to-double tandem stroller with over a dozen seating configurations, though the second seat is bought separately.

7.7/10