THE families of two young Britons found murdered on a Thai island have paid tribute to them as police continue the search for their killer.

The bodies of David Miller, 24, from Jersey, and Hannah Witheridge, 23, from Great Yarmouth, Norfolk, were discovered semi-naked on a beach in the divers' paradise of Koh Tao on Monday.

Ms Witheridge was described by her family as "a beautiful, intelligent, loving young woman who poured joy into the lives of all who knew her", while Mr Miller was a "hard-working, bright and conscientious" young man who would be "sorely, sorely missed".

In a statement, Ms Witheridge's family said: "She was selfless and caring and made each and every day that little bit more wonderful.

"Our family are utterly devastated and shocked by what has happened to our beautiful Hannah.

"To lose her in the way we have is beyond comprehension.

"We are heartbroken and no words can possibly describe how we feel. As such, we would be extremely grateful to be left in peace while we come to terms with our loss."

Paying their own tribute, Mr Miller's family said: "David was an artist by temperament, so talented. He had a creative eye that he carried with him through life and in his degree."

Mr Miller finished studying civil and structural engineering at Leeds University in June, where he was on course to achieve a first-class degree.

He left Jersey on July 18 to undertake a six-week work placement as part of a scholarship at a mining company in Australia before travelling on to Thailand for a break with a close friend.

The bodies of the two Britons were found on a rocky section of the shore around 100 yards from the scene of a beach party.

Police said they sustained horrific injuries, both suffering deep head and face wounds. A bloodstained garden hoe, believed to be the murder weapon, was found nearby.

More than 70 Thai police have questioned migrant workers and tourists on the island, visiting hotels, bars, homes and businesses as they search for the killer.