The importance of getting a good night's kip is all too often overlooked according to sleep researchers at the University of East Anglia. Studies have shown that a lack of sleep not only reduces your immunity, concentration and moods, but it can also lead to longer-term problems such as heart disease, depression or diabetes.

The valerian plant, used by the ancient Greeks for its calming properties, is a natural remedy to help settle you for sleep. Extracts are available as tablets or drops from most pharmacies.

Here are more night aids to make sure you get your 40 winks.