Erm, Hi. And what I'm working on.

[Jamie]

There's a whole raft of possibilities, but I guess you're looking to keep the tone routed in Britsh Folklore. I'm guessing were-creatures fit under 'shapeshifters'. What about a broad heading of 'Beasts' - the seldom seen terrors that stalk the lonely, wild places. Examples in our modern folklore are the beasts of Bodmin and Exmoor, and any number of loch dwelling nasties. The exact nature of these could be left quite vague: are they cat/ bear/ wolf-like, wild feral-men, out of time plesiosaurs or shambling tentacled monstrosities. So long as they've got plenty of teeth...
Tie these creatures into local myths, curses and the like, and you can play out 'Hound of the Baskerville' type scenarios, with an 18th century twist.
Vampires and the like might make an interesting distraction occasionally (I'm remembering some of the C18th scenes of Interview with the Vampire). Maybe they're a bit too 'central Europe' to be a staple though?

[The Gentleman]

Okay, so Beasts. And then a vampires- wamphyri? Actually, too East European. So, just vampires. Maybe Creatures of the Night?

Yours,
The Gentleman

[Jamie]

Will all the 'creatures' be bad guys, or will some have more mixed motivations? Might some actually be occasional allies to the characters, such as helpful fey etc. (but obviously not in a cheesy cute way)

[The Gentleman]

Well, most are pretty much dangerous, although I can imagine the occasional changeling character, or a werewolf. Generally though, the Chancellor and his men only recruit full-blooded Englishmen (which includes the Scots and the Irish, of course, and also the Welsh, when they stop gargling :) ), although their are occasional "ambassadors" to the different beasties, although as the beasties don't have organised nations or clans (except, to a small extent, the fey, and the various societies of assorted evilnes) this is rather hard. I see a row of cells in which intelligent/semi-intelligent creatures are chained up for research and finding out new info on the workings of the mind... or is that simply Silence of the Lambs?

Yours,
The Gentleman