Relentless

''Dean''s journey from the Special Boat Service to intrepid adventurer is truly inspirational.'' - Sir Ranulph Fiennes

''An extraordinary tale of courage and adventure. Dean''s story is inspirational.'' - Levison Wood

''Dean''s relentless determination to help those who face many mental health battles is incredible and admirable - he''s a hero to many.'' - Bear Grylls

For readers of Ant Middleton, Ja...