The father of the late singer Amy Winehouse has launched a new programme to educate young people about drugs and alcohol.
Border officials have seized 1.5 tonnes of cannabis at Heathrow - the biggest haul discovered at the airport in three years.
Officers from the Met have made 351 arrests and discovered 35 cannabis factories.
The Duchess of Cambridge, as Patron of Action on Addiction, is visiting the charity's Hope House treatment centre in Clapham, south London.
The Duchess of Cambridge has been defended by a charity chief executive after a scathing attack by novelist Hilary Mantel.
Nick Barton, who heads Action on Addiction, which Kate supports as patron, described her as an "intelligent" woman genuinely interested in the work of his organisation.
During a lecture, Mantel, the double Booker Prize winner, said Kate appeared to have been "gloss-varnished" with a perfect plastic smile, in contrast to Princess Diana, who she described as awkward and emotionally incontinent.
Kate is currently touring the addiction charity's Hope House treatment centre in Clapham, south London.
Asked for his reaction to Mantel's criticisms, Mr Barton said: "I don't think it's for me to comment on that kind of stuff. I speak of what I know - somebody who wants to help, is helpful and genuinely interested and is intelligent.
"I can only speak (of) what I know. I've met her several times and I found her to be engaging, I found her very natural, I found her actually genuinely interested in the subject."
Hope House offers a safe, secure and comfortable place for women to recover from substance dependence and receive additional support for other compulsive disorders.
It is the first time Kate has been seen in public after photographs of her on holiday in Mustique were published by foreign media.
The Duchess of Cambridge will visit an addiction charity today to meet women recovering from alcohol and drug dependency. Kate will travel to Hope House treatment centre, in Clapham in her role as patron of Action on Addiction.
Each year a different charity, all with royal patrons, will receive fundraising support from 100 Women In Hedge Funds starting with Action on Addiction in 2013, then Harry's charity WellChild in 2014 and finally Kate's organisation the Art Room in 2015.
Kate's visit to the charity's treatment centre will be her first official appearance since pictures showing her on holiday in a bikini and with a very slight baby bump were published in a number of foreign magazines.
A 42 year old Christmas tree salesmen and a man from Croydon who drove around London with half a million pounds stashed in a sports bag are among 4 people sentenced to 54 years in prison for supplying drugs.
The group were arrested in a police operation last November after being tracked by officers who uncovered the gang's plot to supply 100 kilograms of cocaine with a street value of £25m.
A woman from Hampstead whose brother died after inhaling laughing gas is warning others about the dangers.
Art student Joe Benett, 17, was in a coma for four weeks after inhaling nitrous oxide from a canister. He died of a heart attack last Thursday.
His sister Camille is urging people to think twice before using the drug.
The Metropolitan Police has updated the number of arrests and drugs seized as part of Operation Hawk, the anti-drugs initiative launched today.
Warrants executed: 302
Cannabis Plants Seized: 2658
Cannabis Factories closed: 35
Over £2.6million worth of cannabis seized.
Toby Sadler joined police officers closing down a cannabis factory in Dulwich as part of the Met's Operation Hawk.