Residents can anonymously report on drink drivers they know

The new reporting tool will be trialled throughout August

A former roads policing officer hoped an anonymous drink driving reporting tool would make people more "fearful" of driving while over the limit.

Norfolk Police launched a new form which allowed residents to report someone they knew who regularly drove while under the influence of drink or drugs.

The reporting tool would be trialled throughout August and, if successful, would become permanent, the force said.

Ex-officer John Scruby, trustee at Campaign Against Drink Driving, said: "By reporting drink drivers, that can only be a good thing... perhaps people will be fearful they will perhaps be found out."

Information from the form will be fed directly into the police control room, where it will be allocated to an officer to look into.

Insp Will Drummond said: "This tool means that people can help us to remove dangerous drivers from Norfolk's roads without the worry of any potential backlash."

John Scruby said the drink drive limit is not easy to understand or calculate into pints and units

Mr Scruby hoped there would be a "zero tolerance" approach to alcohol in the country in the future.

He said: "I think the major issue is that drinking and driving is not illegal, we have been saying for donkeys years, do not drink and drive... the only way around this, I'm afraid, is a zero tolerance approach."

He added that the current drink-drive limit is not easy to understand or calculate into pints and units.

It came as the government was considering reducing the drink-drive limit from 35 micrograms of alcohol per 100 millilitres of breath to 22 micrograms.