CHERIE Blair became embroiled in a kiss-and-tell expose yesterday.

As she toured the exhibition stalls at Labour's annual conference in Brighton, the prime minister's wife revealed the time and place of her first kiss - at the age of seven.

She appears to have been lucky. It was a memorable event. She could even recall the identity of her childhood sweetheart and had welcomed his father, Denis, to Number 10 after her husband became prime minister.

Viewing a computer mapping system on the Ordnance Survey stall at the conference, the prime minister's wife asked if she could use it to display the Liverpool street on which she grew up.

Not only did she find her home, she pointed out the local park where she had often played as a child.

Mrs Blair said: "That's the first time I was ever kissed, at the age of seven by a boy called Stephen Smerdon under the railway bridge."

Mr Smerdon, who runs a pub in Hertfordshire, was soon tracked down. Now 50, he has been married to wife Claire, 40, for 13 years.

The Smerdons grew up in the same street as Mrs Blair.

Sallyanne, Stephen's sister, said: "Steve often talks about it.

Cherie was so pretty, all the boys liked her."