Well, Elliot, they are, as it happens, one and the same: being a devious customer, he goes by either name, but may well favour Bill POSTERS in your native Australia.
I grew up, knowing this fly-by-night criminal as Bill STICKERS, and you will realise just how old I am when I tell you that the following joke appeared in the London Graphic in 1884:
A countryman named William Stickers, flying to London to escape from rural justice, was appalled at reading on a wall: BILL STICKERS BEWARE. He went a little further, but reading again, BILL STICKERS WILL BE PUNISHED WITH THE UTMOST RIGOUR OF THE LAW, gave himself up for lost and surrendered.In 1960s London - in direct response to the proliferation of BILL STICKERS WILL BE PROSECUTED signs...
...Mr Stickers (aka Posters) famously began sticking up posters (or posting up stickers) which read:
BILL STICKERS IS INNOCENT!
There was a skiffle group called Bill Posters Will Be Band; and - strictly for snappers-up of unconsidered whatsits - you will be amused to know that an utterly useless anagram of Bill Stickers Will Be Prosecuted is: Restrict well-publicised blokes.
And that, I regret to say, concludes your trivia allowance for the day...