The race is on among boffins to create a non-stick chewing gum to stop it littering streets and footpaths.

Ultra-tidy Singapore has lifted its notorious ban on chewing gum after 12 years – but only for registered users. Gum dealers face jail if they break the rules.

The European Court of Justice has upheld a decision to block the Wrigley’s chewing gum maker from trademarking its “Doublemint” brand across the EU.