This book has a terrific central idea, some excellent time-travel shenanigans worthy of Tim Powers, some genius takes on Victoriana, and some great description and action sequences. Unfortunately it's let down by some really poor writing which really should have been dealt with at the editorial stage. In stylistic terms this is stuff like an English character referring to 'Sir Richard Burton' as 'Sir Burton' rather than 'Sir Richard'; the repeated use of 'the famous explorer' as a synonym for the central character (as in "The famous explorer punched the werewolf in the face". Then the subplot of his relationship was almost completely pointless and should have been cut or expanded, Book 1 just rambled in the middle section, and the way the massive exposition sequence is conveniently overheard by the hero is almost criminally clunky.
This isn't just nitpicking: it really dented my enjoyment of the book. I finished it, but it wouldn't have bothered me much if I'd stopped half way. Hodder can create a good story and has excellent ideas but he needs to do a lot more work with his editor to bring out his full potential.