Sonic, I reckon James Kirkup at The Spectator has a fair bit of information.
In one of his articles he talks about the high profile people who've contacted him with concerns.
He's also written pieces on Bercow before.
I hope they all join forces and dig. The Daily Mail is also excellent at investigative journalism. It may not always be aligned to our politics, but when slabs need unturning and you want to reach the masses, they do a sterling job.
Jess Bradley....