In 1407, eight years after Henry IV.

came to the throne, he assented to the important principle that money grants were to be initiated by the House of Commons, were not to be reported to the King until both Houses were agreed, and were to be reported by the Speaker of the Commons' House.

This rule is strictly observed at the present day.

When a money bill, such as the Finance bill for the year or the Appropriation bill, has been passed by the House of Commons and agreed to by the House of Lords, it is, unlike all other bills, returned to the House of Commons."[22] The Speaker, with his own hand, delivers all money bills to the Clerk of Parliaments, the officer whose business it is to signify the royal assent.
In addition to voting money, the Commons, on the assembly of Parliament, would petition for the redress of grievances.

In the thirteenth and fourteenth centuries, they were not legislators, but petitioners for legislation; and as it often happened that their petitions were not granted in the form they asked, it became a matter of bitter complaint that the laws did not correspond with the petitions.