The speaker who sits on the big chair at the far end
The Prime Minister usually sits on the front bench on the right-hand side of the Speaker in the House of Commons. This area is known as the government benches.
A member of Parliament.
Previously this was the Lord Chancellor. Strangely, the Lord Chancellor now sits as a commoner in the House of Commons and his place on the Woolsack has been taken by the Lord Speaker.
It is The Houses of Parliament - comprised of The House of Commons, and The House of Lords.
Speaker of the House
Elected MPs sit in the house of commons. Currently 650 Elected Members of Parliament
The Parliament of the United Kingdom sits there.
There is no strict rule or order of precedence governing who sits where, apart from the Prime Minister, on the Government benches. The composition of the front bench is dependent upon the business of the day. In recent times however, it has become customary for the Deputy Prime Minister, Nick Clegg, to sit to the Prime Minister's right when both are in the House.
the speaker sits in the middle
Vice President and the Speaker of the House will be sitting behind Obama during the 2014 state of union address.
The presiding officer in the House of Lords (historically the Lord Chancellor, since 2006 the Lord Speaker).