Portcullis House Location 1 Parliament SquareLondonSW1A 0AA Next Event Visit to the House of Commons[TG1v/HoC] - VISIT NOW FULL - 23/07/2025 - 1:00 pm - 5:00 pm Loading Map.... Portcullis House1 Parliament Square - LondonEvents 51.500818 -0.12602 Upcoming Events Visit to the House of Commons[TG1v/HoC] - VISIT NOW FULL - 23/07/2025 - 1:00 pm - 5:00 pm