For the bits Colin can't get
http://www.productsforwargamers.com/
This is why my steel bases and magnetic sheets come from, no idea where he gets them from but I find easy to use and local to me, Jim the guy behind it is at my local club down here as opposed to my non-local club which I actually go to more, go figure
Posted as an answer to Boycie and Lee's question on Sunday over where I got them from.