Everest, Lhotse & Nuptse

Our Leaders

Mountain Expeditions employs a small number of highly experienced Expedition Leaders to lead our trips. Carefully chosen for their experience, qualifications, personality and their ability to apply themselves to challenging situations.



zac-u-1 Zac Poulton is a one of the most highly experienced mountain instructors and expedition guides in the UK. He holds the Mountain Instructor Certificate (the highest mountaineering qualification in the UK) and is a full member of the Association of Mountaineering Instructors , the Mountain Training Association, theMIC.org, The Alpine Club, has a background in Sport & Exercise Science and is medically trained as a WEMSI Wilderness First Responder. Additional qualifications include BCU Level 3 Coach in Open Canoe & WW Kayak, 4* Surf & Sea Kayak leader, Rescue 3 Swift Water Rescue Technician, RYA Powerboat II & Day Skipper Theory, Mountain Instructor Award and Summer & Winter Mountain Leader. He is also a member of the Rab & Lowe Alpine AMI Test Teams.

In 2011 he led an expedition to the North Ridge of Everest which put 18 climbers including himself, on the summit. Zac has safely led a total of 27 people above 8000m. Other notable ascents have included the 11th British & 1st Australian ascent of Baruntse (7201m), 2nd British ascent of Himlung Himal (7126m), 100% success leading on Cho Oyu and  a solo ascent of Ama Dablam.

Throughout the winter months he works in Antarctica for ALE  guiding teams on Mt Vinson & South Pole expeditions. In 6 expeditions to Greenland he has provided safety for a BBC Natural History Film Unit, guided an Eton College Mountaineering Club expedition, claimed a few 1st ascents and led a full traverse of Liverpool Land.

Among more than 50 plus expeditions Zac has led trips to Khan Tengri, Aconcagua, Carstensz Pyramid, Pumori, Stok Kangri, the Tien Shan, Island Peak, K2 Base Camp, Kilimanjaro, Pt Nelion (Mt Kenya) and guided 5 of the 7 Summits. He spent 4 years working as the Logistics & Operations Manager for one of the UK’s leading expedition companies.

In the world of endurance sport he has completed more than 30 ultra marathons & adventure races, is an Ironman Triathlete and has completed the UTMB, the 190 mile Northern Traverse, Glencoe Skyline, Antarctic Ice Marathon and the Bob Graham Round.

Basically he is one of the best in the game and we are delighted that he is leading for Mountain Expeditions.


Simon Verspeak

Simon Verspeak has been living and working in Snowdonia for over ten years, originally moving there to gain a BSc in Geography at Bangor University. He is an accomplished climber, alpinist, off-piste skier and expedition leader. He has led several youth expeditions around the world as well as successful adult expeditions in Morocco, Nepal and Kilimanjaro. He has climbed numerous 6000m peaks in the Himalaya as well as attempting first ascents in the Pamirs and has successfully climbed Peak Lenin 7134m in Kyrgyzstan.

He is a qualified Mountaineering Instructor (MIA) and Winter Mountain Leader (WML) as well as holding kayaking, mountain biking and caving leadership awards. Simon spends the winter months instructing and guiding in Scotland’s mountains and the summers on rock in North Wales. He is an active member of the Llanberis Mountain Rescue team and is an Advanced First Aider. He loves carrots.

Overall he’s a thoroughly nice chap & he will hopefully be leading some of our expeditions in 2017!

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