Oh... I see the problem. You have put .MPQs in the wrong way.
The .MPQs from archive have to be put in your WoW/Data folder.
wow-update-base-18273.MPQ and wow-update-base-18548.MPQ go into WoW/Data.
wow-update-enGB-18273.MPQ go into WoW/Data/enGB.
Also, remove wow-update-43400.MPQ (and any other starting with 434), they are meant for Cataclysm only.
The .MPQs from archive have to be put in your WoW/Data folder.
wow-update-base-18273.MPQ and wow-update-base-18548.MPQ go into WoW/Data.
wow-update-enGB-18273.MPQ go into WoW/Data/enGB.
Also, remove wow-update-43400.MPQ (and any other starting with 434), they are meant for Cataclysm only.