However, we should not overestimate the degree of London business community ennoblement. Not all the merchants and their descendants, who had received noble titles and established noble families, completely broke ties with the city economy. In such a dynamic society as London's, the borders between different classes were rather vague and the same families had the possibilities to move from one class to another not once. All the more so, that nobility in England was not a closed hereditary class with rights and privileges recorded by law and separated from other social groups. Access to it was not only open but obligatory for free men who had a certain income. The fact of being noble by birth was not so important as on the continent.