floral emblems and heraldic badges, and the bosses in the intersections of the ribs are also carved into heraldic symbols. Each wall of the Lobby is contained in an arch ornamented with statues of English and Scottish monarchs; on four sides there are doorways, and the tympana above them are adorned with mosaics representing the patron saints of the United Kingdom's constituent nations: Saint George for England, Saint Andrew for Scotland, Saint David for Wales and Saint Patrick for Ireland. The other four arches are occupied by high windows, under which there are stone screens—the hall's post office, one of two in the Palace, is located behind one of these screens. In front of them stand four bigger-than-life statues of 19th-century statesmen, including one of four-time prime minister William Gladstone. The floor on which they stand is tiled with Minton encaustic tiles in intricate patterns and includes a passage from Psalm 127 written in Latin, which translates as follows: "Except the Lord build the House their labour is but lost that build it". The East Corridor leads from the Central Lobby to the Lower Waiting Hall, and its six panels remained blank until 1910, when they were filled with scenes from Tudor history. They were all paid for by Liberal peers and each was the work of a different artist, but uniformity was achieved between the frescoes thanks to a common colour palette of red, black and gold and a uniform height for the depicted characters. One of the scenes is probably not historical: Plucking the Red and White Roses in the Old Temple Gardens, depicting the origin of these flowers as emblems of the Houses of Lancaster and York respectively, was taken from Shakespeare's play Henry VI, Part 1. Members' Lobby Continuing north from the Central Lobby is the Commons' Corridor. It is of almost identical design to its southern counterpart and is decorated with scenes of 17th-century political history between the Civil War and the Revolution of 1688. They were painted by Edward Matthew Ward and include subjects like Monk Declaring for a Free Parliament and The Lords and Commons Presenting the Crown to William III and Mary II in the Banqueting Hall. Then, mirroring the arrangement at the Lords part of the Palace, is another antechamber, the Members' Lobby. In this room, Members of Parliament hold discussions or negotiations, and are often interviewed by accredited journalists, collectively