A guide on how to spot signs of modern slavery has been published by Greenwich Council as it has asked locals to help in save the victims.

The council has set up a dedicated contact point for people to report any suspicions when they spot these tell-tale signs.

According to the council, there could be up to 13,000 victims of modern slavery in the UK but that it is notoriously hard to identify.

Victims often work in nail bars, car washes, construction sites or domestic servitude and even criminal activity such as the sex industry or drug running.

The key signs include:

• Unsafe working conditions and inadequate protective clothing or equipment.

• Working excessively long hours.

• Groups of workers being ferried around at unusual times.

• People with no ID or travel documents.

• Workers who appear nervous or who get others to speak on their behalf.

• People with injuries and signs of severe neglect.

• Workers not integrated into the community.

• Signs of domestic servitude include people rarely seen out of the home alone who do not have a dedicated sleeping place or do not eat with the rest of the family.

• Signs of sexual abuse include properties with a large number of visitors at all hours and victims with tattoos or other marks to indicate ownership.

Councillor Jackie Smith, cabinet member for community safety and environment, said: “It is horrifying that slavery exists to such an extent in this country and that victims suffering such a violation of their human rights can remain hidden.

“However, many people do unwittingly come into contact with victims while going about their daily lives but they are unsure where concerns can be reported.

“This is why we have set up a dedicated point of contact for people to get it touch. We are also highlighting the key signs of modern slavery for which alarm bells should be ringing.

“It is vital that everyone helps to identify victims so they can be rescued and given the support they deserve especially as many are too terrified to come forward themselves.

"The Council is determined to identify the ruthless who profiteer from modern slavery and rescue the victims.

“Tip offs from residents can play a big part in the Council’s work with it partners to crack down on exploitation on its doorstep.”

To report concerns, contact Peter Davis, the head of safeguarding adults on 020 8921 3888 or email adultsafeguarding@royalgreenwich.gov.uk