The two main threats facing Robin Hood are the intensive threat of competitive rivals and threats to suppliers. Prince John and the Sherriff are Robin’s main rivals and pose a definite threat to his operation. They are in direct competition with each other, and their actions have to constantly be monitored. They pose a high level threat, because of the threat of an attack, taxations to the residents of the forest, and their persistent efforts to capture Robin Hood and his Merrymen. Suppliers are a high level threat, because at any point those who support Robin Hood could be captured by Prince John and the Sherriff, thus cutting off supplies. Also, the bargaining power of suppliers is high simply because of the business Robin is involved in. His business is illegal and therefore a high level threat to anyone who supplies to him.
The Merrymen need to build off the strengths it has.