The scandalous deed Robbie Williams did at Buckingham Palace

Robbie Williams claims he once sparked up a spliff and smoked cannabis at Buckingham Palace.

The singer, 42, told The Sun that the incident happened during the Monarch's Diamond Jubilee Concert in 2012.

The event took place on The Mall and was organised by Robbie's Take That bandmate Gary Barlow, the Daily Mail reports.

He denied he had ever vomited at the royal household, when asked by the publication, but added: "I smoked a spliff in Buckingham Palace."

Perhaps Robbie was feeling inspired on the day by John Lennon's famous claim that The Beatles smoked marijuana before being made MBEs in 1965.

For years the tale was widely believed, until guitarist George Harrison explained: "We never smoked marijuana... What happened was we were waiting to go through, standing in an enormous line with hundreds of people and we were so nervous that we went to the toilet. And in there we smoked a cigarette - we were all smokers in those days."

- Daily Mail