An address in Watford was raided this morning as part of a year-long Metropolitan Police investigation into human trafficking.

The raid in the town was in addition to several in London and was led by officers who have been looking into the trafficking of Chinese women in to the UK for the purpose of sexual exploitation.

The seven warrants this morning resulted in the arrests of six men and two women, while vulnerable people found in the properties are now receiving support from specialist officers.

Police are in the process of seizing evidence which could support offences of human trafficking and controlling prostitution, including proceeds of crime, mobile phones, computers, travel documents, criminal assets, cash, passports, ledgers, and any material linked to sex adverts.

It is believed that some of the addresses entered by police were operating as brothels, with the raids led by the Met's Modern Slavery and Child Exploitation Unit (MCSE).

Officers who entered the addresses were accompanied by officers from the MSCE, interpreters and Mandarin speaking officers.

Acting Detective Inspector Nick Bland of the central specialist crime unit said: "This morning’s operation, despite being the culmination of a lengthy investigation, is only the first step in bringing the people arrested to face the consequences for their actions.

"Young women who are trafficked in to this country for sexual exploitation are often sold a dream in terms of what their life in the UK may look like, that dream is quickly unravelled upon their arrival to the country, where they will often be forced to live in abject poverty and be at the beck and call of their traffickers. In some cases it is impossible for these women to escape to their home countries as their travel documents are confiscated.

"We know that crimes such as these are amongst some the most damaging to victims. They will no doubt have suffered untold pain and distress during their time in this country under the influence of these individuals.

"My officers will now commence the seizure and examination of evidence from the properties in order build a case against these individuals for submission to the criminal prosecution service. The Met continues to make every effort to reduce high impact crime such as this and the fear of it, and the warrant executed this morning has no doubt contributed to this mission."