Hi Peter
I would second Lathes.co.uk, used it to clear a friends workshop a few years ago that had quite specialised clockmaking equipment in it. Just sent some good photo's and Tony who runs the site identified everything ,wrote the description and valued it. It all sold quickly and without any fuss or time wasters. I used it myself to sell a Myford last year and that sold very quickly.
I tried to sell a mill on ebay once and that proved to be a disaster due to time wasters and scammers, never again.
Good luck
Dave