Where Was the Ambassador at the Reagan Statue Unveiling?

The London Evening Standard reports that the American Ambassador was not present a ceremony in London to unveil a new statue of President Ronald Reagan:

It was one of the most glittering events of the year, attracting some of the greatest names in American and British politics.

But as the British roasted lamb and the sunny Californian chardonnay were cleared away, one notable absence was the hottest topic among guests at the Guildhall dinner in honour of Ronald Reagan's centenary.

Where was the American ambassador to London, Louis B Susman?

He had, it soon transpired, been invited. But despite a guest list that boasted four British Cabinet ministers, ex-Prime Minister, nine US congressmen and a senator and former Secretary of State Condoleezza Rice, there was no sign of President Obama's representative in London.

And in a warm atmosphere evoking the closest days of the special Anglo-US relationship of the Eighties, the surprise at Mr Susman's absence turned to annoyance.

"Our ambassador should be here," said Lynn de Rothschild, the American entrepreneur who is married to Sir Evelyn de Rothschild and was one of Hillary Clinton's key fundraisers in 2008 as well as a supporter of several Republican presidential candidates. "This was an historic dinner to mark Reagan's centenary and to celebrate him as the man who ended the Cold War. What could not be more important?

"Why is our ambassador not here on Independence Day? No excuse. How is it that America is not represented in this room by our ambassador? It is appalling that no representative of our government is in this room. This has the feel of petty partisanship."

Would Ike do this to FDR? Would Nixon?  Its really unbelievable.  There are Pro-Reagan statues and events going on all over Europe and we are not capitalizing on them for partisan reasons?

UPDATE: It appears from the comments (and the American Spectator) that the American Ambassdor to London gave a gracious speech on Ronald Reagan.