Sam Llewellyn has 3 audiobooks on Listento.it, narrated by 3 narrators. The most-rated is Storm Force from Navarone.

Bill Tyrell spent 10 years reporting from the hellholes of the world. Now he has had enough and is back in England living aboard the antique cutter yacht Vixen, taking juvenile delinquents to sea for the good of their souls. But the journalist in him cannot be buried. Not when a Russian naval cadet dies in a stupid accident under the eyes of a cabinet minister and Tyrell becomes the scapegoat.
©1991 Sam Llewellyn (P)2014 Audible, Inc.

Abbot Dagger's Academy is a boarding school for children so weird, bad or just plain brilliant they must be locked up far from civilisation. Onyx, Owen and Rosetti are the weirdest, baddest, and brilliantest. THey have to win the Greyte Cup for Achievement by Founder's Day. But first they have to find it.Easy right?Wrong! The greyte Cup is no ordinary trophy. It's the Holy Grail. And someone has hidden it-somewherein the trackless wastes of time. So they'd better blast off. Right now!
©2007 Sam Llewellyn (P)2008 Oakhill Publishing Ltd

The surviving commandos are sent on a perilous journey through the Pyrenees to disable the greatest threat to the impending D-day landings: the 'Werwolf' U-boats. But their Basque guides declare it mission impossible - D-day is less than six days away.
©1996 Sam Llewellyn, 2017 HarperCollins Publishers (P)2017 HarperCollins Publishers