Cheers fellas Terry I checked out some figures online, Dragon do some really nice ones, I might go for them. But I did find a bloke on ebay who sells 'DAK heads', a set of 6 resin heads with the DAK caps, so you decapitate your existing figures and replace with these, but I don't know if the the kit figures uniforms would be suitable though.
I've got the IV pretty much finished and the base is done, I just need to add the figures when I get them.
I still need to get my finger out and take some pics of my finished Havoc for the PTO GB!