To reflect the astounding success in the US of the TV series Downton Abbey, Hugh Bonneville is said to be on the guest list. Sir Jonathan Ive – Apple’s British design supremo – is said to be attending, too, along with Damian Lewis, the British actor who shone as a US special ops soldier sprung from prison in Iraq in the Showtime hit, Homeland. Impressive? Attendees at a White House dinner for Tony Blair in 1998 included Harrison Ford, Tom Hanks and Barbra Streisand.

What this means is that the hacks reporting the event get to see some famous faces. It’s star spotting for the lucky few:

Mr Cameron sported a black shirt with long sleeves and blue jeans while Mr Obama was in his usual weekend garb of a blue and white checkered shirt and easy trousers. A boys’ night out? So it seems…

Perhaps a more refined affair than the boys – the vitals at the Dayton game for the two leaders of the free world consisted primarily of frankfurters.