Police picked up almost 150 knives during a week-long weapons amnesty.

Hertfordshire Constabulary took part in a national knife amnesty last week, where 144 knives were placed in bins at police stations in Hatfield, Stevenage and Watford.

Of those collected included knuckle dusters, swords and military knives, 43 of which were delivered to Watford.

A knife arch was used at a Watford night club to search more than 200 people, where one was detected and confiscated.

No weapons were found at other weapon sweep which took place in Waltham Cross, Watford and Stevenage.

DCI Doug Black, who led the campaign, said: "We have had a great response from the public who have been very positive towards our plans to tackle knife related incident in the county.

"This campaign has been a good starting point and we have reduced the number of knives in circulation and we have carried out a number of knife detection and test purchasing operations."

Cadets were also used to ensure retailers were not illegally selling blades to those under 18.