The State Opening of Parliament is a political event that is steeped in tradition and history.

The procession of Black Rod from the Commons to the House of Lords is the most well known of the day's traditions.

But another tradition sees a Government whip held "hostage" at the palace to ensure the Queen's safe return.

The custom dates back to the civil war, when the monarch and parliament were on less cordial terms.

Jim Fitzpatrick is one MP who was detained at her majesty's pleasure.