There is not a door these guys won't be sliding under to ensure that Thomson is kept intact.
Even if he were to charged with anything, it would take many months for the case to see the light of day and possibly years for it to materialise.
The only chance for Brillard to come down is if one of the chosen few cross the floor, and Jokeshott, Windsor and Wilkie are all very quiet... "nothing to see here"
