Choosing baby bottles looks straightforward until you see the options: wide-neck or narrow, glass or plastic, small or large, with teat shapes and promises about colic. The useful question is not which bottle has the most features. It is which one your baby can feed from comfortably and you can clean properly every day.
This UK baby bottle buying guide covers bottle shapes, bottle materials, teat flow and vents. You do not need to find a perfect bottle before your baby arrives. A practical starting point, followed by small adjustments, is often better.
Start with your feeding routine
Before choosing feeding bottles, think about who will use them and where. Occasional bottles of expressed breast milk create different demands from preparing formula throughout the day. Consider washing facilities, space for a steriliser and whether relatives will help with feeds.
For example, in a small kitchen with regular night feeds, a wide opening and few detachable parts can make cleaning less fiddly. When several carers share feeding, clear volume markings and easy-to-assemble teats matter too.
The NHS says there is no evidence that one bottle or teat type is better than all others. Simple, easy-clean designs are a sensible starting point.
Choose a useful size, not the biggest bottle
Newborns usually take smaller, frequent feeds, so parents often begin with smaller bottles. Larger ones may be convenient later, but capacity does not dictate how much your baby should drink. Watch feeding cues rather than expecting an emptied bottle.
Common sizes include around 150 ml and 250 to 260 ml, depending on brand. Choose clear measurement markings, particularly for powdered formula: measure the correct water volume before adding the powder. Our baby bottle size guide can help you weigh smaller and larger options without buying a full set immediately.
Compare bottle shapes for comfort and cleaning
Straight-sided and wide-neck bottles
Narrow bottles are compact and familiar. Wide-neck versions can be easier to fill and reach with a brush. Neither shape guarantees a better feeding experience, so check how securely the teat fits and how comfortably you can grip the bottle.
Angled and contoured bottles
Curves and angled necks may suit some carers, but they can create awkward corners to clean. Before buying, check that a bottle brush reaches the base and that all components separate as instructed. Try holding the bottle with one hand while imagining supporting your baby’s head with the other.
Understand the bottle materials
Plastic bottles are lightweight and less likely to shatter if dropped. Choose products made for infant feeding, follow the manufacturer’s temperature instructions and replace bottles that are cracked, damaged or badly scratched.
Glass resists scratching but is heavier and can break. Check that your chosen model is suitable for your sterilising method. Protective sleeves can improve grip, although they do not remove the need to handle glass carefully.
Flexible silicone bottles appeal to some families, but may cost more or feel less stable when being filled. There is no universal winner: cleaning, durability and ease of handling deserve more attention than material claims. A baby bottle materials comparison is worth reading before purchasing multipacks.
Pick teats by your baby’s response
Teats come in rounded and wider, breast-like shapes. Neither is automatically best, including for babies who also breastfeed. If your baby repeatedly slips off, becomes frustrated or struggles with milk flow, trying another shape may help.
Slow-flow teats are generally recommended for newborns. However, manufacturers’ age and flow labels are not perfectly comparable. Watch for gulping, coughing or milk spilling from the mouth, which may indicate a flow that is hard to manage. Persistently difficult or tiring feeds warrant advice from a health visitor rather than repeated guesswork.
For paced feeding, the NHS advises holding your baby close and keeping the bottle nearly horizontal, slightly tilted so milk does not flow too quickly. Offer pauses, follow signs of fullness and never force the last drops. Never prop a bottle up or leave your baby feeding alone.
Think carefully about anti-colic features
Anti-colic bottles use valves, vents or specialised teats designed to reduce swallowed air. Some families find them helpful, but no bottle can guarantee prevention or a cure for colic.
Extra components also mean extra cleaning. If your baby seems uncomfortable, consider positioning, flow and burping rather than relying on a marketing claim. Seek advice from your health visitor or GP for persistent feeding problems or concerns about growth. Our anti-colic bottle designs guide explains common vent arrangements in more detail.
Check the cleaning routine before you buy
NHS guidance is to sterilise feeding bottles, teats and other equipment until your baby is at least 12 months old, whether using formula or expressed breast milk. First wash everything in hot, soapy water with a dedicated brush and rinse it thoroughly. A dishwasher can clean suitable equipment but does not sterilise it.
Options for sterilising include steam, cold-water solution and boiling, provided the equipment is compatible and instructions are followed. Bottles with intricate valves may demand more time each day. Check how easily you can reach small components and whether replacement parts are available.
For powdered formula, the NHS advises using freshly boiled tap water cooled for no longer than 30 minutes, so it is still at least 70°C when mixed with the powder. Cool the feed before offering it. Never microwave formula because uneven heating can cause burns. Make sure your bottle is suitable for the preparation temperatures involved.
Start small and test real feeds
A few simple bottles with compatible slow-flow teats, a dedicated cleaning brush and a sterilising method are a reasonable starting point. Check that replacement teats and seals are sold in the UK.
If a feed does not go smoothly, change one variable at a time. Switching the bottle shape, teat flow and feeding routine together makes it difficult to know what helped. Most importantly, notice how your baby drinks rather than judging the design by its packaging.
Frequently asked questions
How many baby bottles do I need initially?
There is no fixed number. It depends on how often you bottle-feed and how regularly you wash and sterilise equipment. Start with a few to avoid buying a large set your baby may not accept.
Are expensive bottles better?
Not necessarily. The NHS finds no evidence that a particular bottle or teat type is superior. A simple, affordable design that suits your baby may be the better purchase.
When should I move to a faster-flow teat?
Watch your baby’s behaviour rather than relying on age labels. If feeding becomes difficult, discuss flow changes with your health visitor. Faster flow is not automatically an improvement.
Do I sterilise after every use?
Yes. Clean and sterilise feeding equipment before each use until your baby is at least 12 months old, including bottles used for expressed breast milk.
Choose what works day after day
Knowing how to choose baby bottles means prioritising a manageable teat, comfortable grip, readable markings and easy cleaning. Buy a small trial selection, observe your baby’s feeding and add more only when you know what works.
