Re: queens accent
Carrie Fisher does indeed sound quite English when she says that line, "I recognised your foul stench when you came onboard," to Tarkin. I agree that she does the accent better than Portman.
Did anyone notice that in the trailer for TPM, they had not yet used sound technology to lower Portman's voice, so when she says, "get to your ships!" she sounds higher than when she says it in the film.