You would describe a bloke that owns a security firm as a craftsman?
I was basing it more on the property repairs and electrical stuff rather than the security. I assume that the security bit isn't his main source of business, since telling all and sundry that you're providing security for Alexis Sanchez probably isnt the best way of providing security for Alexis Sanchez. Unless its just fitting burglar alarms which might take a bit of craft.