This is a list of Members of Parliament (MPs) in the second half of the Long Parliament which began in the reign of King Charles I and continued into the Commonwealth. The fifth and last Parliament of Charles I began at Westminster 3 November 1640 and continued sitting until 20 April 1653, when it was dissolved. By 1645, a considerable proportion of the house had been removed, being expelled for various reasons, disabled for supporting the King, killed in the Civil War or lost through natural causes. Their seats were left vacant for several years and were filled by new elections after around 1645, so that new MPs supplemented those that had survived since 1640.