Coucher came from a prosperous Worcester family of clothiers. His father, bailiff of Worcester in the 1560s, bought the manor of Woodmanton in Clifton-on-Teme in 1570, which he passed on to his son.
In 1604 Coucher was elected for Worcester alongside his brother-in-law Christopher Dighton. He appears only once in the records of the 1604 session, when he was appointed to the committee for the bill for charitable relief of parishes infected with the plague (18 May).
Re-elected in 1614, Coucher made three recorded speeches. On 15 Apr. he offered to deliver to the committee for petitions copies of both the grievances presented to the king in 1610 and James’s answer, which were missing from the clerk’s records. He also contributed to the debate on the Cockayne project, when he called for ‘present remedy’ for the depression in the cloth industry (20 May). On 31 May he opposed the bill to exclude brewers and others in the drinks trade from the bench, arguing that it would ‘pleasure those brewers, etc., for they shall be thereby exempted from charge’. He was named to one committee, for the bill for building and repair of bridges (7 May).
In 1621 Coucher again made three recorded speeches, all concerned with the cloth trade. During a debate in committee on the bill for the free buying of wool (16 Feb.), he argued that the Staplers’ monopoly of the domestic wool trade had increased the price paid by clothiers.
Coucher appears only once in the records of the 1624 Parliament, when he argued that all merchants should be free to export dyed and dressed cloth (5 May).
In 1631 Coucher paid £12 for his knighthood composition fine.
