Ronald Turnbull is a walker, writer, photographer and bivvybag sleeper based in Southern Scotland. In 1995 he won the Fell Running Association's Long Distance Trophy for a 10-day run over all the hills of Southern Scotland – a journey of 450 miles with over 90,000ft of ascent. His special interest is in multi-day backpack trips over rough country, and he has just completed his 21st coast-to-coast journey across the UK: a crossing of the Highlands from Knoydart to Aberdeen. Author of the minor classic 'The Book of the Bivvy', he likes to sleep out without tent on UK hilltops, and has achieved comfortable nights on 73 separate summits.

Ronald has won the Outdoor Writers' and Photographers' Guild awards seven times, in four separate categories, including Best Guidebook for 'Coast to Coast Trail Guide' (1998) and Best Outdoor Book for 'Coast to Coasting' (2000, co-author with John Gillham), 'The Book of the Bivvy' (2001), 'Life and Times of the Black Pig' (a 'cultural biography' of Ben Macdui, 2008) and 'Granite and Grit' (a hillwalkers' guide to the UK's mountain geology, 2010). 'Long Days in Lakeland' from Grey Stone Books was highly commended in the Lakeland Book of the Year Award.

Ronald's website is at

Irvine Butterfield was one of the UK's best known and most respected outdoor writers and was, until his death in 2009, a tireless worker for the John Muir Trust and The Mountaineering Council of Scotland.

    Born a Yorkshire man, Irvine was considered an honorary Scot. He has worked in the whisky industry and now lives near Perth in the Highlands.

    Irvine's best-known books were the classic High Mountains of Britain and Ireland and The Magic of the Munros.

    He wrote The Famous Highland Drove Road for Grey Stone and the book showed his love for all things Scottish - history, legend, wildlife, but above all, the mountains themselves.

Jon Sparks is a walker, climber, cyclist, writer and photographer specialising in landscape, environment and outdoor pursuits from Britain, Europe and beyond, with 5 continents represented in his picture library. He is also Secretary of the Outdoor Writers‚ Guild. Jon supplied the photographs for the Official Lake District National Park Guide, publishes postcards and greetings cards of the District, and contributes to many other books and magazines. He has just collaborated with Terry Marsh on a major book on the Scottish islands, which was published in Spring 2002 Jon’s first books for John Gillham Publishing, Car-Free Cumbria Vols 1 & 2, were released in Spring 2002, followed by Scrambles and Easy Climbs in the Lake District 2003 (with Judith Brown) Scrambles and Easy Climbs in the Snowdonia 2005 (with Jerry Rawson and Tom Hutton). Jon also wrote Hike n’ Bike in Bowland and Pendle and is currently working on a biking book on the South Lakes.

Roy Clayton wrote The Welsh Three Thousands, now out of print, before collaborating with Ronald Turnbull on The Welsh Three Thousand Foot Challenges and Lakeland Mountain Challenges. Roy is the nephew of Grey Stone Books supremo, John Gillham. Indeed, it was Roy who got John into walking. Together they did the first crossing of Snowdonia to Gower. Roy lives in Preesall near Blackpool with his girlfriend, Jan. He has two children, Ricky and Natasha, and is a local government officer. He has spent time in Australia and would love to go back there one day to do some of their mountains, especially Tasmania .

Ronald Turnbull

Irvine Butterfield

Roy Clayton

Jon Sparks