THE BROTHER of a missing backpacker in Cambodia has vowed he won’t stop until she is found.

Amelia Bambridge, 21, from Worthing, went missing on the island of Koh Rong in the south of the country a week ago.

Her brother Harry has joined the search effort as more than 200 army, navy and police scour the area.

The former paratrooper joined a helicopter search at the island, where Amelia’s parents are also part of the search effort.

He said: “We won’t stop until she’s found.”

Amelia was last seen at 3am on a beach on the island on Thursday last week.

Her bag containing her purse, phone and bank cards, was found on a rock there, while her passport remained in a room at a hostel.

More than 7,000 people have now signed a petition calling on the Foreign and Commonwealth Office to provide more support for Amelia’s family in the country.

The change.org petition suggests the family have had difficulties with talking to police chiefs and have not had a translator.

It states: “It is the duty of the Foreign and Commonwealth Office to stand up for British people in need, wherever they are in the world and as of yet, they’ve not done anything of the sort.”

But the FCO said: “Amelia’s family have our deepest sympathies at this very difficult time.

"Our staff have been providing in-person assistance to them on Koh Rong island, and maintaining close contact with the Cambodian authorities searching for Amelia.”

Deputy police chief Nop Panha said: “We are still conducting the search operation and we will try our best to find her.”

But fears are growing, with one Cambodian police officer saying the chances of finding Amelia are “very slim”, while another suggested they are already searching for a body.

One member of the police dog unit said: “As we reach seven days the scent trail is very low percentage wise. But we still have hope. It is still worth trying.”