Reading was a parliamentary borough, and later a borough constituency in England, represented in the House of Commons of the Parliament of England until 1707, the Parliament of Great Britain from 1707 to 1800, and of the Parliament of the United Kingdom from 1801 to 1950 and 1955 to 1974. Until 1885, the constituency comprised the town of Reading in the county of Berkshire; after 1885, it was centred on the town but the exact boundaries differed.