Bathroom Furniture Buying Guide: How to Choose the Right Vanity Units, Cabinets and Storage (UK)

Bathroom furniture has to earn its keep in the UK's smallest, dampest room. The choice comes down to four things: which type you need (vanity unit, wall cabinet, floor cabinet or tallboy), whether it fits the space you have, whether the material copes with daily condensation, and whether it should hang on the wall or stand on the floor. This guide covers all four, with real UK sizing and in-stock picks.

In this guide

• Vanity unit, wall cabinet, floor cabinet or tallboy: what's the difference?
• What size fits a small bathroom or en-suite?
• Which material handles bathroom humidity best?
• Wall-mounted or floor-standing: which should you choose?
• Do mirrored cabinets and demister mirrors work in every bathroom?
• Frequently asked questions

Vanity unit, wall cabinet, floor cabinet or tallboy: what's the difference?

These four terms get used loosely by retailers, which is where most buying mistakes start. Here's the plain-English version:

• Vanity unit: includes an integrated basin and replaces your existing sink. Right for a proper refit rather than adding storage around what's already there.
• Wall cabinet: fixes above or beside the basin, keeping the floor completely clear. Best for a small bathroom or narrow en-suite.
• Floor cabinet: stands on the floor with drawers or cupboard doors, and holds more than a wall cabinet of the same width since it isn't limited by what a wall fixing can carry.
• Tallboy: a tall, narrow floor cabinet built for an awkward gap beside a bath or toilet, trading width for height.

If you want to keep your existing basin and just add storage underneath rather than replace it, you need a different product again: an under-sink cabinet. See our under-sink bathroom cabinet buying guide for the pedestal and pipework measurements this guide doesn't repeat.

Vanity unit pick

Bathroom Vanity Unit with Basin and 2 Drawers, 600mm, White

A floor-standing vanity unit with a built-in ceramic basin and two drawers, 610W x 370D x 880H mm with a 560W x 325D mm cut-out. High-gloss melamine finish, overflow drain built into the basin.

From £126.99 View this vanity unit →

What size fits a small bathroom or en-suite?

Most UK bathroom furniture is sized to fit a genuinely small room, provided you pick the right depth category rather than the first design you like.

Measure your actual gap at its narrowest point (skirting boards and pipe boxing eat into width more than people expect), and check door swing or drawer clearance, not just the footprint. In a tight en-suite, a 12 to 15cm-deep wall cabinet won't catch a shoulder in a narrow doorway the way a 35cm-deep floor cabinet would.

Which material handles bathroom humidity best?

This determines whether your bathroom furniture lasts five years or fifteen, and it matters more than style or colour.

The mechanism matters as much as the label. Moisture damage in MDF starts at exposed cut edges and screw holes, where the core can wick up moisture and swell before the face looks affected. A listing that just says "MDF" without specifying moisture-resistant treatment means the standard version: seal any cut edges with paint or varnish, wipe up standing water, and ventilate the room after every shower.

Tallboy pick

Tall Mirrored Bathroom Cabinet, 32 x 28 x 162cm, White

162cm tall on a 32 x 28cm footprint, fits a narrow gap beside a bath or toilet. Mirrored front, adjustable shelf, holds up to 20kg in total.

From £65.99 View this tallboy →

Wall-mounted or floor-standing: which should you choose?

Choose wall-mounted if floor space is the scarce resource; choose floor-standing if storage capacity matters more and you have a spare stretch of wall or floor. Beyond that headline, the trade-offs are practical rather than about looks:

• Wall-mounted keeps the floor clear, which makes a small bathroom or en-suite feel larger and easier to clean underneath.
• Wall-mounted units need proper support. A cabinet with a basin on top weighs more once fitted than it looks in the box, so check whether your wall is solid masonry or stud, and whether the fixing kit is rated for it. On a stud wall, that usually means fixing into the studs or adding a noggin (a horizontal timber support) behind the plasterboard, not just standard wall plugs.
• Floor-standing units hold more for their width, since they aren't limited by what a wall fixing can carry, and they're generally the simpler DIY fit.
• Floor-standing units are easier to clean around, not under, since dust can collect in the gap beneath unless the unit sits on sealed feet or directly on the floor.

Browse our full wall cabinets collection or our floor cabinets collection to compare both types side by side.

Wall cabinet pick

Bathroom Mirror Cabinet with Adjustable Shelves, White

A slimline wall-mounted cabinet at 68 x 13 x 66cm, so it sits close to the wall in a tight en-suite. Three adjustable shelf positions and two curved mirror doors that double as a grooming mirror.

From £60.99 View this cabinet →

Do mirrored cabinets and demister mirrors work in every bathroom?

A mirrored cabinet does two jobs in one: storage and a mirror, useful in a small bathroom where wall space is limited. The main thing to check before buying is what's inside.

• A basic mirrored cabinet is just a cabinet with a mirror on the door. No wiring, no running cost, fits anywhere a normal wall cabinet would.
• An LED-lit cabinet adds proper light for shaving or make-up that a single overhead bathroom light rarely gives you. Look for a dimmable, touch-sensor model.
• A demister-pad cabinet heats a small pad behind the mirror to stop it fogging after a shower. On some models the pad runs continuously rather than switching off with the light, so check for an independent on/off control if you'd rather not run it all day.

Premium pick

LED Bathroom Mirror Cabinet, Dimmable, 3 Doors, High Gloss Black

Three mirrored doors over adjustable shelves, dimmable LED lighting with a touch sensor that remembers your last setting. USB powered, adapter not included.

From £112.99 View this cabinet →

Frequently asked questions

What's the difference between a vanity unit and a bathroom cabinet?

A vanity unit includes an integrated basin and replaces your existing sink. A bathroom cabinet, wall-mounted or floor-standing, is purely storage and works alongside whatever basin you already have. Doing a full refit, choose a vanity unit; just need more storage, choose a cabinet.

Is MDF bathroom furniture any good, or will it swell?

Moisture-resistant MDF, identifiable by a green-tinted core when cut, copes reliably with normal bathroom humidity and is the standard material for most UK bathroom furniture. Standard MDF without that treatment swells faster if it gets properly wet, particularly at unsealed edges. Either way, seal cut edges, wipe up standing water, and keep the room ventilated.

Should I choose a wall-mounted or floor-standing cabinet for a small bathroom?

Wall-mounted, in most cases. Keeping the floor clear makes a small bathroom or en-suite feel larger. The trade-off is capacity: a floor-standing cabinet of the same width generally holds more, since it isn't limited by what a wall fixing can carry.

Why is my new vanity unit shallower than my old basin?

Many modern vanity units are built shallower than older pedestal basins, often around 35 to 40cm deep against an old basin that might project 45cm or more. Measure your existing basin's depth before ordering and check the vanity unit's listed depth against it.

Do I need a professional to fit a wall-mounted vanity unit or cabinet?

A basic wall cabinet is a straightforward DIY fit on most walls. A wall-mounted vanity unit with a basin is heavier once fitted than it looks in the box, so check your wall type first: solid masonry copes fine, while a stud wall needs fixing into the studs or a noggin behind the plasterboard. If in doubt, get a professional to check the fixing before it's loaded up.

Are mirrored cabinets with built-in lighting worth it?

Yes, if you use the bathroom mirror for shaving or make-up, since a single overhead light rarely gives even lighting. Look for a dimmable, touch-sensor model. If the cabinet has a demister pad, check whether it switches off independently of the light, since some models run continuously.

This guide is part of our wider home furniture buying guide, which covers sizing and materials for every other room in the house.