I just paid a visit to the Sun’s online service, to see what they were doing with David Cameron’s dumping of his ‘cast iron guarantee’ – made to the paper’s readers – to hold a referendum on Europe. 

If you take the front page and the main news page together, I reckon you’re looking at going on for around one hundred stories. Only one of them mentions Cameron – a photocall he did with Gary Lineker yesterday about a plan to give tickets for football matches and other major events to UK troops.

But unless I am going blind in my old age, I cannot see a single mention of the abandonment of the pledge made explicitly and exclusively to Sun readers, which may well have played a part in the paper’s decision to switch their support from Labour to Tory, alongside some of the changes the Tories have made to their media policies, many of them uncannily similar to calls made by Sky boss James Murdoch.

But whether it did or it did not, surely it is news. Surely Sun readers, who according to columnist Trevor Kavanagh put Europe at or close to the top of their political interests, have an interest in following every twist and turn of this story as Cameron tries to bring some coherence to his incoherent policy, even if he does bottle out of the announcement himself, leaving it to William Hague to let down his fellow sceptics.

‘Cast iron guarantee’ is quite a big statement to make. So how can it not be big news when it turns out to have rusted?