Neither of these answers reflects the more important historical roots of the English Reformation, a desire for independence from the Roman Papacy, which, due to the political activities of the Papal States, was actually a (moderately hostile) temporal foreign power as well as an ecclesiastical one, allied with England's enemies. This distrust of the Papacy, and reluctance to have a foreign Pope appoint Bishops who sat in the House of Lords and have control of huge tracts of land in England, dates back as far as the Acts of Praemunire, Provisions, and Provisors in the fourteenth century.
One of the great tensions in the institutional structure of Christianity from its origins had been the centripetal force, impelled by the needs of the Roman emperors who made Christianity a state religion, to have Christianity unified with a coherent bureaucracy and power structure, versus the centrifugal tendencies towards regional or even congregational independence. The notion that the Bishop of Rome should proclaim himself a "Pope", overriding ecumenical councils unilaterally (by, for example, adding the "filioque" to the Nicene Creed), and claiming dominance over other archbishops such as the Patriarch of Constantinople, was never something uniformly accepted by all Christians; in some ways, the organizational structure of the Church of England could be considered as reclaiming many of the Orthodox traditions of episcopal structure (which have continued from early Christianity to the present day) from which the Roman Catholic Church had departed.
There were also many proto-Protestant movements in England before the establishment of the Church of England including the Lollards, who, contra the above post, were generally poor and uneducated, and not members of the noble elites. Although the events of Henry VIII's life were certainly the catalyst for the final step of a break with Rome, the tensions leading up to the break had existed ever since the introduction of Christianity in England. While the 664 Synod of Whitby imposed a Roman model of Christianity on England, this imposition was controversial and far from uniformly popular. To account for the English reformation simply in terms of the events of a few years is to drastically oversimplify issues that had a long and complex history.