Paul I've seen DI advertising I think. It looks like a great job. Say hi to everyone for me.

From what I'm hearing it's hard enough finding perm staff in London because of the freelance rates and the skills shortage at the higher end of the market. Game dev plus xml integration plus OOP means you do need a high calibre of developer, this will limit you quite a bit.

I think your best bet is to hire enthusiastic juniors and train them up. Other than that - Outsourcing smaller jobs like ThinkerThinker said?