A 98-year-old message in a bottle has been discovered off the coast of Shetland, with a note offering a reward of six pence to its finder.

Scottish fisherman Andrew Leaper is now the world record holder for discovering the oldest bottle set adrift - but the previous record was set by his colleague, who was on the same fishing boat, Copious.

Previous record-holder Mark Anderson's bottle was found in 2006.

The bottle contained a postcard from June 1914 from Captain CH Brown from the Glasgow School of Navigation.

The BBC reported that a batch of 1,890 scientific research bottles were sunk help map the currents of the seas around Scotland when they were returned.

Only 315 of them have ever been found.

Leaper told the BBC: "As we hauled in the nets I spotted the bottle neck sticking out and I quickly grabbed it before it fell back in the sea.

"It was very exciting to find the bottle and I couldn't wait to open it.

"It's like winning the lottery twice."

He said his friend Anderson had "never stopped talking about it " since he found his bottle.

He added: "Now I am the one who is immensely proud to be the finder of the world record message in a bottle."

A spokesperson for Guinness World Records said in a statement: "We are pleased to hear that the same vessel helped to break the Guinness World Record for oldest message in a bottle twice.

"This is a fascinating record, both historically and scientifically.

"We hope that future expeditions will retrieve more of these treasured messages from the sea."

The bottle and the Guinness World Records certificate have been donated to the Fetlar Interpretative Centre in Shetland.