I downloaded the above via my Synology NAS download station. Its now up and running on my spare PC.

10056 iso is on the web
10056.0.150405-1348.FBL_IMPRESSIVE_CLIENTENTERPRISE_VOL_X64FRE_EN-US

I undertook a fresh install of 10041 via on a spare rig that I set up, unfortunately after an update (not sure, but think it was to do with security) the system refused to boot. So now begs the...