Finding a smashing tenant is the holy grail of being a landlord. Someone who pays their dues like clockwork, respects your gaff like it's Buckingham Palace, and perhaps even leaves a cracking Victoria Sponge on the doorstep come Christmas (though we won't hold our breath). But how do you avoid ending up with a tenant who's more dodgy than a dodgy dodgy bloke down the pub? Worry not, dear reader, for this...