The early modern period in Britain generally refers to 1500-1600s so I’m gonna go with that for my answer.

First of all, the early modern period saw the beginning of a significant change in the economic landscape. London (and other cities) broadened their commercial possibilities by no longer relying on the production of a few trade goods (in London’s case, wool). Increased population due primarily to an influx of migrant labor allowed for more specialization in the workforce among urban artisans. Expansion of state power in the period also opened the way for government officials and lawyers to join craftsmen in a growing middle class. Additionally, the realignment of trade towards the Atlantic seaboard made London more important for the fledgling merchant and banker classes of Europe.

Meanwhile, the aristocracy began moving in large part to the city, bringing large servant-filled estates with them. The spread of Renaissance humanism (thanks in large part to the printing press) took a strong hold among Britain’s aristocratic elite. Among the virtues of humanism were education (especially in the classics) and patronage of the arts. Suddenly the expectation among nobles was that they would be cultured and educated, a trait that was quite uncommon in the High Middle Ages and even Late Middle Ages to a somewhat lesser extent. As such, aristocrats were more likely to become patrons for artists and other artisans in the city, which fueled the enterprise therein.

London’s increased importance as an Atlantic port was only reinforced by the concurrent fall of Venice, whose relevance continually diminished due in large part to military defeat at the hands of the Ottoman Turks. Despite this, European trade did become even easier in the period, which heightened London’s economic influence even further.

As such, the humanist movement and the economic changes of the Renaissance were the most important factors in making the British elite more “enterprising”, both in terms of arts patronage and economic investment (especially since Atlantic trade investment had the possibility of far greater profits than Mediterranean trade ever offered).

TLDR; humanism makes aristocracy patronize art and recenter themselves on city. Growing cities create more economic opportunity. Atlantic trade is far more profitable than European, which leads to more investment from elites.

Let me know if you need anything else clarified/I missed an aspect of the question you wanted to know about!

Sources:

Nauert’s Humanism and the Culture of Renaissance Europe (1995)

Porter and Teich’s The Renaissance in National Context (1992)

Boulton’s The Cambridge Urban History of Britain II: 1540-1840 (2000)