I'm not an author or anything but I live in London, and not the fun part, and I think there maybe cause to add more phonetic spelling of your character's dialogue. If, for example, the story takes place in the UK you can assume that everyone understands each other and throw in the occasional 'nuffink' or 'bruv' for colour. However, if it takes place in most places in North America no one is likely to understand him anyway and confusing your readers, a little, maybe appropriate.
By the By... do you really think Tim Roth has a thick accent?

Nice one!
Yes, I think Jim should appear at my local pub. Where no one (but me) will know him or ask him damn fool questions or tell him not to die before completing his opus.
He could just get quietly legless on good British ale.

I see from your profile you're from Vancouver, me too. Although I live in London now.
I had a few more thoughts about a London game, if you'll permit me...

How about making it the headquarters of the Venatori? Personally I see them having a garrison at the tower of London, under the White tower the head of Bran the blessed is supposed to be buried. Maybe it still talks from time to time? Google "Bran the blessed"

The London Stone is the navel stone (omphalos) of London and by extention of The British empire. What would happen if it fell into the wrong hands? It used to be much bigger, Dr John Dee (White council?) is known to have taken some to run experiments. Could be a good theme.

Finally I'm thinking that the Black Court have been dying (no pun intended) to get their hands on London since Stoker published his book. With church attendance down and all the wannabe vampires around maybe the time has come.

Anyway, hope this helps. If you need info for your game let me know.

You forgot "subtle and quick to anger".
Can't forget that!

Hear that Jim?
You're safe until you finish the DF.
Come to London, the beer's better.

Not sure if this is the place to post this, but it would be wonderful to get Jim out of the 'States for a signing date.
Any desire to visit London, Jim?

I'll buy you a pint.

http://www.robirda.com/legends/

If you want to get more modern you could build great story ideas from all the shit that goes down in the downtown eastside. There is a huge heroin problem and many people have and continue to go missing. Robert Pickton has been convicted of many of those murders, could there be something else at work?

I hope this doesn't come across as insensitive, I worked in the downtown eastside for years (lived in Vancouver for 23) I would never want to trivialize the pain that people have gone through. The best fantasy has a core of harsh reality.

I don't have the game so I don't know what would suit Vancouver in the way of nasties. Most of them are too cool for Canada. Maybe Black Court feeding on junkies?