Cheers, yes indeed, wise words. In 8 years of practice on my own I've had clones of the hard disk, time machine backups, cloud backups, and 100 undos. However having moved home, I've not properly set up the office, and so the Time Machine for example was not in operation this week - that saves you having to have 30 backups as it saves a version every hour.
Not the end of the world, in really looking at it I've got about 6-8 hours drawing work to do over the weekend. Lessoned learned. Could have been worse.