Came across him sitting the middle of a footpath, so I photographed him then moved him somewhere safer.
That's easy, Chris. If he's sitting on a stool, or if he responds to "Mister," or if he's considered by his coworkers to be a toady, then he's a toad.
Toads have rough skin, frogs are smooth. The pictures on Google help identification too. Thanks for the comments folks, appreciated.
"Toads have rough skin, frogs are smooth. The pictures on Google help identification too." See @Chris Dodkin, there are numerous ways to tell a toad from a frog, and Dave has provided two more.