His name is John Bercow, and he is a conservative MP. hope this helps :)
the speaker sits in the middle
The modern Parliament system in the UK developed during Tudor Dynasty. It was during this time, that the "Speaker" of the Houses was traditionalized.
UK
There aren't any houses in the UK on 110 volts. The UK standard is 230 volts.
majority leader
no
They are signalling to the Speaker that they would like to be selected by him/her to speak next.
Speaker
the speaker of the house
The Speaker
They have an apartment, that we pay for !
The presiding officer in the House of Lords (historically the Lord Chancellor, since 2006 the Lord Speaker).