The newspapers are still insisting that the now-you-see-it now-you-don’t romance between Kate Middleton and Prince William is hitting new heights.

Yesterday, one tabloid apparently printed exclusive pictures showing the pair enjoying an intimate candlelit drink together before they headed to the dancefloor at the Concert for Diana aftershow party.

A “friend” commented, “Kate was dancing so sexily in front of Wills that chemistry was just oozing off them. None of us had ever seen quite so much electricity between them before. It was as if they had just met and fallen in love for the first time. They didn’t leave each other’s side for the whole party.”

Well waddayaknow. They’ve been at the superglue again.

It was a splendid concert by any standards. At times the atmosphere was electric, despite the seating arrangements which limited numbers in the centre of the arena.

Of the two Princes, William looked trim and on form after his night at Clarence House with Kate Middleton. Harry, though, seemed awkward and subdued for once, and he had clearly put on weight. This could be explained by the news that he’s giving up smoking — again. At times he looked to be gasping for a fag. Maybe he could have done with a Mahiki menu too.

The smoking ban — it’s now prohibited in enclosed public places across the country — caused more problems in the dressing rooms. Lily Allen was said to have walked out at 6pm when told to stop lighting up. Such temperament! Could it have contributed to the missing finale?

There was also a hitch at the end when the planned mass finale of all the artistes was called off because of “technical difficulties”. Elton John did a few numbers, after a lacklustre “comedy” routine by Ricky Gervais of The Office. Then the whole event petered out with a video of Nelson Mandela saying nothing particularly new.

Nevertheless, there were seven hours of excellent entertainment before the anticlimax, with cheery Fearne Cotton brightening up the interludes of the BBC transmission with interviews and to-camera improvisations.

I spotted Mike Tindall rocking along with Zara Philips in one arm and an unknown female in the other. Diana’s sister, Sarah, and brother Charles were also singing along heartily to the older numbers.

All in all an impressive day considering the whole nation was on massive terrorist alert.

Well done William and Harry.

Kate Middleton spent the night before the Concert for Diana with Prince William at Clarence House. Arriving at midnight, her car was collected from a hotel carpark by an aide.

However, at the concert, she sat two rows behind William, while Chelsy Davy was in the front row next to Prince Harry, conspicuously kissing and cuddling.

It seems that the Wills / Kate romance is definitely on again, but that the couple want to play it down to avoid press attention.

This is confirmed by a quote from a “senior Royal source” who said: “They are of course close friends and have remained so since April. But they both want space and do not want to conduct their friendship with the added attention and pressure of more speculation. They particularly did not want their friendship to be the focus of media attention. Yesterday was about Diana and celebrating her life and work.”

The media, of course, loves a cloak and dagger romance — Prince Charles famously hid in the boot of his car when visiting Camilla at Raymill House.

Somehow I think they’re going to get more attention rather than less.

A concert in memory of Princess Diana, who died ten years ago this summer, is being held at the new Wembley stadium on Sunday, July 1, which would have been her 46th birthday.

The concert is being organized by her two sons, Prince William and Prince Harry, with the help of Chelsy Davy and Kate Middleton, both of whom are expected to be there.

Already lined up to perform are Elton John, Rod Stewart, Duran Duran, Take That, Lily Allen, Bryan Ferry, Pharrell Williams, The English National Ballet, Joss Stone, The Feeling, Fergie, James Morrison, Natasha Bedingfield, P. Diddy, Will Young and Andrew Lloyd Webber, who will stage a medley of songs from some of his greatest West End shows.

The event will be shown worldwide on TV and by internet streaming. You can find out how to view it in your country here.