Mrs Tony Blair is Cherie Blair, a working [sometimes] lawyer and a QC as well. She is known also as Cherie Booth QC in her working mode. We do not suffer from this American [apparently] need to give everybody a title.
The fact that she has a mouth shaped like a letter box, and the dress sense of a chipmunk doesn't affect the fact that she's only the PMs wife and has no political role or title.
Giok

PS QC for the benefit of those who may not know is a Queen's Counsel, but we've all seen Rumpole so we know these things.
G