Muhammad Ali’s funeral service is to be streamed live at London’s O2 Arena, the site of his I Am The Greatest Exhibition.

It will be shown on the giant screens from 7pm BST by The O2’s main entrance where the public can watch it, leave flowers, and also sign the book of condolence at the exhibition inside. It can also be streamed on AliCenter.org.

Ali, considered the world’s greatest ever world heavyweight champion, died last Friday in Arizona at the age of 74 after being taken to hospital with a respiratory condition complicated by his long-term struggle with Parkinson’s disease.

His funeral service is to take place in his hometown of Louisville, Kentucky, from 2pm ET.

Tickets for that have sold out, but people have been seen selling them online.

Muhammad Ali’s family has described touts who are cashing in on his memorial service as ‘despicable’.

Free tickets to tomorrow’s event in Kentucky have been listed online for as much as 100 dollars.

Events to mark the boxing legend’s death begin this afternoon, when thousands are expected to attend a traditional Muslim prayer service.