Obviously, the main feature you will look for in a bath thermometer is its ability to give you a quick and accurate measurement of the water temperature in your bath. This handheld thermometer is super simple, with a button for ‘on’ and another to take your baby’s temperature. Don’t forget that before and after each use you should clean the thermometer tip with alcohol on cotton wool too. Digital stick thermometers tend to be the cheapest type of thermometer on the market and also the most compact.

If you want a thermometer that doubles as a room thermometer then the Philips thermometer is probably the preferred choice. The bottle-making kit comes with two rapid-cool flasks with digital thermometer lids, as well as an insulated flask to transport hot water, so you don’t have to worry about finding boiling water when a hungry baby strikes.The device heats to 45°C in 8-27 minutes, depending on how much liquid is being heated, the starting temperature of the liquid, and the ambient temperature of the environment. Some people may still test their baby’s bath water the old-fashioned way (dipping your elbow in), but many parents now feel more comfortable using a thermometer for peace of mind, especially as babies have far more sensitive skin than we do. It plugs into a USB port, so there is no need for batteries, and then displays the room's temperature clearly on a lit display so you can see it from the door of your baby’s room. If this is the case, make sure you have the correct ones in the house and save yourself a midnight dash to the nearest 24-hour Tesco.

It doesn’t have a digital display or flashing lights but is simple to use and gives a fairly accurate reading (although some people have said it is not as accurate as other thermometers).Of course, if you are at home, or don’t have a bottle warmer, you can always heat breastmilk or pre-made formula by placing the bottle into a pan or cup of hot water and allowing it to heat up that way. The RapidCool™ lid must glow Nuby red when attached to the flask to indicate the water is at the correct temperature. As well as heating water, formula or pumped breastmilk very accurately to body temperature in just 2-10 minutes (depending on the volume and starting temperature of the liquid), the bottle warmer can also be used to defrost frozen breastmilk, and to heat baby food.