Couldn't figure how to PM. I checked at Valdada IOR web and all of their bases are steel. Also found these:
www.midwayusa.com/eproduct?saleitemid=742849

I put this on your other post but wasn't sure if you saw it.

til later

Sorry Pete,I left some out!
www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=742849

EP,

Cheers for that..I'm going to see if i can pick some up at one of the gamefairs..MidwayUk carries them, but charge as much for postage and packing as the base costs!

Regards,

Pete