Bedside Crib vs Cot.
Which do you actually need?
Most parents buy both and wish they’d known which one they’d actually use. This guide explains the real differences, who each one suits, and whether you need to spend £300 on a bedside crib at all.
This guide is aligned with NHS and Lullaby Trust safe sleep guidance. Both bedside cribs and cots are safe sleeping environments when used correctly. For full safe sleep guidance including room-sharing recommendations, see our safe sleep guide.
At a glance
Bedside cribs — the full picture
A bedside crib is a small crib designed to attach to — or sit flush against — the adult bed, with one side that folds down or removes entirely so the sleeping surface is continuous with yours. The baby sleeps in their own safe space but is effectively within arm’s reach.
The genuine advantages
Night feeding is significantly easier. For breastfeeding mothers especially, being able to feed and settle a baby without fully waking up or leaving the bed makes a meaningful difference over weeks and months of broken sleep. This is the main reason bedside cribs exist and the main reason parents buy them.
The NHS recommends room-sharing for the first 6 months. A bedside crib makes this recommendation very easy to follow without the baby being in the adult bed — which carries its own risks — or a full cot taking up most of the bedroom.
Settling is easier. Being able to reach over and replace a dummy, stroke a baby’s head or offer a hand without getting up reduces the number of full-wake episodes for both parent and baby.
The limitations
They’re expensive for six months of use. Most bedside cribs accommodate babies up to approximately 65cm in length, which is reached by most babies between 5–7 months. At £150–350 for that window of use, the cost-per-month is high. Second-hand models are widely available and worth considering — check that the mattress is new, as second-hand mattresses are not recommended.
They require the right bed height. Most models adjust for bed height, but very low platform beds or very high divan beds can make a flush attachment difficult or impossible. Check the minimum and maximum height adjustment of any model before buying.
Not all babies take to them. Some babies sleep better with a sense of enclosure that a bedside crib with one open side doesn’t provide. This is not predictable in advance.
Cots — the full picture
A standard cot is a fixed-side or drop-side crib on legs, typically 120×60cm, designed to last from birth to approximately 2–3 years (or longer as a toddler bed if the sides are removable). It lives in the nursery or bedroom and stays there.
The genuine advantages
Much better long-term value. A cot used from birth to age 3 — or converted to a toddler bed and used longer — costs significantly less per month than a bedside crib used for 6 months. If you only buy one sleep surface, a cot is the more rational purchase.
No transition required. One of the most commonly underestimated problems with bedside cribs is that babies get used to them — and transitioning a 6-month-old who has always slept attached to your bed into a separate cot in a different room is genuinely hard. Parents who start in a cot from birth avoid this transition entirely.
Larger sleeping area. Babies outgrow bedside cribs; they rarely outgrow cots before they’re developmentally ready for a toddler bed.
The limitations
Night feeds require getting up. In the early weeks, when feeding every 2–3 hours, having to fully wake up, walk to a cot and settle a baby back down is more disruptive than feeding from a bedside crib. This is a real cost in the first 3 months.
Larger footprint. A standard cot requires more bedroom space. In a smaller bedroom or flat, this can be a genuine constraint.
Safe sleep — does it matter which you choose?
Both bedside cribs and cots are safe sleeping environments when used correctly. The key safe sleep principles are the same regardless of which you choose:
Flat, firm mattress that fits snugly with no gaps. Baby placed on their back. No loose bedding, pillows, bumpers or soft toys in the sleep space. Room temperature 16–20°C. No smoking in the home.
The crib must attach securely so it cannot move away from the bed. The mattress heights must be level — if the baby’s surface is lower than the adult mattress, the crib is not correctly attached. Never add pillows or rolled blankets to raise the height.
Which suits your situation
You are breastfeeding and prioritise night feed ease
The bedside crib is the better short-term choice. The difference in disruption between reaching sideways and getting out of bed several times a night across months of feeding is not trivial. Buy second-hand to reduce the cost.
You are formula feeding or using a combination approach
Night feeds already require getting up and preparing a bottle. The proximity advantage of a bedside crib is smaller. A cot from birth with a good baby monitor makes more practical and financial sense.
You have a small bedroom
A bedside crib is considerably more space-efficient than a cot, and most fold or disassemble easily when not in use. If fitting a full cot in your bedroom isn’t possible, a bedside crib for the first 6 months followed by a cot in the nursery is the natural solution.
Budget is a priority
Buy a cot only. A good cot from £100–150 used until age 3 is significantly better value than a bedside crib plus a cot. If you want the night feed convenience, buy a second-hand bedside crib for £50–80 and a new mattress.
You are worried about the transition out of a bedside crib
This concern is worth taking seriously. Babies who have always slept attached to the parent’s bed can find the transition to a separate cot difficult. If you think this will be an issue, starting in a cot from birth — even if it’s in your room — avoids the problem entirely.
You are planning more than one child
A bedside crib used across two or three children has a much lower per-child cost. If you plan to have more children close together, buying new and keeping the crib in good condition makes more sense.
Most families benefit from both — but if you can only buy one, buy a cot.
The bedside crib’s value is concentrated in the first 6 months, particularly for breastfeeding families. It is genuinely useful during that period — the night feed convenience is real and the safe sleep alignment is straightforward. But it is expensive for its useful life, requires a second purchase (the cot) when the baby outgrows it, and creates a transition that some families find difficult.
A cot from birth works perfectly well, especially if it lives in your bedroom for the first 6 months. The main sacrifice is night feed convenience in the early weeks — which is real, but manageable. If budget allows both, a second-hand bedside crib with a new mattress for the first 6 months followed by a cot is genuinely the best of both. See our best bedside cribs guide and best cots guide for specific recommendations.
