Shaun Clarke has 3 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is Into Vietnam.

Ultimate soldier. Ultimate mission. But can the SAS recruit primitive natives to help them thwart an invading rebel force? In inhospitable, perilous terrain, braving jungle and swamp, the SAS are dispatched to live with primitive headhunting natives, to try to win hearts and minds with medical aid and assistance, in the hope of recruiting them as Border Scout paramilitaries. As the training progresses, other SAS soldiers move even deeper into the unexplored jungle - 'the Gap' - to establish ambush sites and helicopter LZs. These Tiptoe Boys conduct daring Claret raids across the border, hitting hard and vanishing fast, ambushing enemy troops moving along the many jungle tracks and rivers. It will be a bloody, nightmarish war - and the SAS must win it.
©2016 Shaun Clarke (P)2016 HarperCollins Publishers Limited

Ultimate soldier. Ultimate mission. But will the SAS be able to outfox the IRA as they prepare a deadly reprisal? May 1987: a successful SAS ambush results in the deaths of eight IRA terrorists in Loughgall. Knowing that retaliation is certain and that Gibraltar has been selected by the IRA as a 'soft' target associated with British imperialism, British intelligence goes on the alert. Then two IRA members arrive in Southern Spain under false names, and an Irishwoman, also using a false identity, visits the changing of the guard ceremony outside the Governor of Gibraltar's residence. Intelligence believes the ceremony is likely to be attacked, and the British government sends in the SAS. Tasked with preventing the bombing, if necessary by killing the terrorists, the SAS team will need to call into play all their expertise and tenacity in what will become a deadly game of cat and mouse.
©2016 Shaun Clarke (P)2016 HarperCollins Publishers Limited

Ultimate soldier. Ultimate mission. But will the SAS survive a nightmare journey into the tunnel lair of the Viet Cong? June 1966: 3 Squadron SAS (Australian Special Air Service) set up a forward operating base in Vietnam's Phuoc Tuy province, a swampy hell of jungle and paddy fields 45 miles east of Saigon, in the heart of enemy territory. The Viet Cong have bases throughout the jungle, and the Australians soon find themselves under constant attack. Enter three members of the legendary 22 SAS to assist in a major assault against the Viet Cong: Sergeant Jimmy 'Jimbo' Ashman, founding member of the Regiment; Sergeant Richard 'Dead-Eye Dick' Parker, veteran of previous SAS operations in Malaya, Borneo and Aden; and Lieutenant Colonel Patrick 'Paddy' Callaghan, pulled out of administration specially for this secret mission. Working under appalling conditions, Brits and Aussies must try to forge themselves into a potent fighting machine, as they have been tasked with the fearsome job of rooting the Viet Cong out of their labyrinthine tunnel system. It will be a journey into hell, and some will never return.
©2016 Shaun Clarke (P)2016 HarperCollins Publishers Limited