There's far too much filth on TV

One of the great mysteries of TV, as far as I'm concerned, is its obsession with grime and filth.

And I'm not talking about a style of hip hop music or rude programmes.

I mean actual dirt and filth.

I just cannot understand why anyone would want to watch people with disgusting jobs like hygiene inspector, binman or working down a sewer.

Series like Grimefighters make me heave. And why on earth anyone wants to sit through horrible programmes like BBC2's Filthy Cities is beyond me.

Neil Morrissey seems oddly obsessed with the subject. He volunteered to go into the sewers for an edition of Celebrity Grimefighters (surely this was scraping the reality show barrel), and now he's narrating yet another new series on the subject, Channel 5's Supersize Grime.

Any shows about girme are bad enough, but having them supersized is just my idea of hell, thanks.