I was somewhat surprised by your unusual request, it isn't often that we hear from those looking to take people out of Newgate rather than put more in (at least from those of decent repute).

Before retiring and then coming back to the force, I was actually a senior warden on our beloved prison and can tell you it was not all war-criminals and die-hard revolutionaries. There are several such people - a couple of skilled smugglers, brawlers and the like - who are nearing their parole and perhaps your group can give them more of a purpose than they'd have had otherwise.
As far as I know, the Core has few operations in house space. If any 'recruits' you get from us do not live up to their parole terms, they can be reminded of their swift return.

Superintendent Bailey (our current Warden) will fill out the paperwork, shut in her office as usual, I'll be sure to warn her.
In the meantime, good luck in your endeavours.