http://www.production-technology.com/ http://www.eagle-smt.com/ interestingly seem to also sell new Autotronik Pick and Place and the DEKtek ovens you can also see on stencilsunlimited.com
http://tsautomation.co.uk/ not the most informative of sites, not even the 'New' stuff is identified
http://www.adamtech.co.uk/ sells and services DEK printers
http://www.zpel.co.uk/Used-Soldering-Machines.html reflow mainly
William it could be handy if you could add details for Daletech and your northern people and what services they might offer.
Mike - I think there are a few in you initial list that are now defunct.
epsolutions now seem to use their website to sell sub contract services but I think they do also still sell/broker equipment. I guess you need to contact them directly to see what they have, like Grove they did seem to be prepared to handle low end kit like RV's others seem to stick to big stuff.
I think it goes without saying that the main distributors/manufacturers also get 2nd user equipment on occasions even if they do not explicitly list it.
Europlacer certainly does, MyData blew very hot and cold in this area, one moment they were saying buy new feeders from us and we will virtually throw in an older serviced machine, then the next it was we prefer it if Shawline/Adopt do that for us.