M4 Brompton l P Line Lunar Ice.

The Brompton M4 Lunar Ice is a British-made steel folding bike designed for urban commuting and quick city trips. The frame uses Brompton's lateral fold to collapse into a compact package that fits under a desk or into a train luggage rack, making it practical for anyone mixing cycling with public transport. The Lunar Ice colour finish shifts between crisp silver and subtle violet tones depending on the light, giving the bike a distinctive look without sacrificing the durability you'd expect from a steel frame.

This is the 4-speed setup, which keeps things light and straightforward. The hub gears require minimal maintenance compared to derailleur systems, and the four ratios handle typical city riding well—enough to deal with gentle hills without overcomplicating things. The M-type bars sit you in an upright position, which works well for urban cycling where visibility in traffic matters. Mudguards come as standard, so you're ready for wet weather from day one without needing to bolt on extras.

With 16-inch wheels, the Brompton feels nimble and responsive in traffic, and that wheel size is partly what keeps the fold so tight. You'll notice the smaller wheels need a bit more pedal effort to maintain speed compared to larger bikes, but that's the trade-off for portability and manoeuvrability in congested streets. The side-pull caliper brakes are reliable and simple to adjust if needed.

This bike suits commuters who cycle part of the way and use trains or buses for the rest, or anyone working in a small office where storage space is tight. It's equally at home on a short leisure ride around town. The fold becomes second nature after a few uses, and the whole package is straightforward to live with day to day.