David Cameron speaks on Jay Slater during East Lancs visit

Apprentice bricklayer Jay is still missing in Tenerife and has not been seen or heard from since Monday, June 17.

Lord Cameron, a former Prime Minister, said he is “thinking of and worrying” about Jay and his family, adding that officials are determined to find out what has happened to him.

When asked about the search for the 19-year-old, while on a visit to Rolls-Royce in Barnoldswick, the Foreign Secretary said: “I am absolutely across this.

“One of the most important jobs the Foreign Secretary has is to make sure we give consular assistance anywhere in the world to British citizens who are in trouble.

“Obviously I am thinking of and worrying about the family and this young man.

“Consular officials are there in Tenerife talking to the family, talking to the local authorities there and desperately keen that we make progress and find out what’s happened.”

The search for missing Oswaldtwistle teenager Jay Slater has entered its 11th day today (June 27).

There have been no major breakthroughs yet in the search for Jay, who was last heard from in the early hours in a remote part of the Spanish island.

It is believed Jay disappeared following an attempt to walk back to his accommodation after missing a bus.

He had attended the NRG music festival on the island with two friends before his disappearance.

Former police officer, Mark Williams-Thomas, said third-party involvement and the ‘drug underworld’ of Tenerife’ is a ‘line of enquiry’ in the hunt for missing teenager.

In a press conference, he said: “I have received information there is no doubt an underworld here… a big drugs [trade].

“I can’t tell you at the moment whether that has had a big impact. I have only been here less than 48 hours.

“What I can tell you is the information I currently have. The family has shared everything with me.

“I have a lot of messages and WhatsApp chats. This is a line of enquiry.”