Editors. "Parliamentary Protestation denies the King's right to imprison MPs". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15875, accessed 17 April 2014.]
In England, the House of Commons makes a Protestation which challenges the King's right to imprison MPs. This is effectively a measure of self-defence, since it follows criticism of James I's pro-Spanish foreign policy.