Hospitals ban them, airlines ban them (though this is gradually being reduced through improvements in the security of flight navigation equipment) and now it looks like the new celebrity thing to do is ban everyone on a movie set from using mobile phones – this time its Reese Witherspoon, outlawing mobile phone usage to prevent pictures of her being taken with co-star Jake Gyllenhaal in an attempt stop tabloid rumours about her relationship with her co-star following her divorce from Ryan Philliope last month.

No mention of course of what happens if they’re seen using a mobile. Whatever will they think of next….