Some addicts and pushers in Brighton and Hove cross the road when they see Jake the labrador coming.

They are aware he can tell whether people have been in contact with drugs up to a day earlier.

Yesterday, addicts were spotted in the children's playground at The Level waiting for a dealer to supply them with drugs.

It shows how desperate they must be and how little dealers care that they can use this venue for their trade.

Jake is part of Operation Frosty, which police are using to get rid of addicts and other nuisances such as shoplifters and drunks from busy areas of the city.

Dealers are the dregs of society but the other scourges are not wanted on the streets.

Some of them need help but others deserve to be in jail. Jake, with a more sensitive nose than any human, is highly successful at sniffing out trouble.