So, I now have a LVM of my own with Bytemark and most of the things I use (including this) moved off Project Colo. The whole process was shockingly painless, even with a change of MTA to Exim (since everyone seems to be using it and the callout facilities for processing mail prior to acceptance seem much nicer than those of Postfix). Data transfer seems to have taken more of my time than anything else. There’s still some stuff to deal with but that can wait for a little while.