As for the now-exes, they've been married since 1995. and have 4 daughters together.
"Ewan and Mary Elizabeth were there together and seemed relaxed in each other's company", a witness told the publication. The cafe was really busy with people including delivery drivers coming in and out the whole time.
Diners could not believe what they were seeing as the Scottish-born superstar talked intently with the 32-year-old actress before the pair enjoyed a steamy kiss and then left on his motorbike.
Married Hollywood movie star Ewan McGregor was spotted kissing his Fargo co-star Mary Elizabeth Winstead in a busy London café, it has been reported.
Winstead also split from her significant other, husband Riley Stearns, back in May.
According to a family source who spoke to People, the couple has been separated since May. They have four kids together, and the split apparently happened back in May.
The couple met on the set of court drama Kavanagh QC in 1995, shortly before the Scottish star's portrayal of heroin addict Mark Renton in Danny Boyle's Trainspotting won him global acclaim.
Bergdahl, facing sentencing, says Taliban treated him better than Army
Bergdahl is accused of endangering comrades in Afghanistan and pleaded guilty to charges that could send him to prison for life. But some Republicans said the deal amounted to negotiating with terrorists.
The couple have four daughters together: Clara, 21, Jamyan, 16, Esther, 15 and Anouk, 6.
She wore a pair of large dark sunglasses but was without her wedding ring.
Ewan and Mary Elizabeth play love interests on the show. looks like they took the romance off-camera too. In her statement about the breakup, Winstead called Stears her "best friend".
'We are still ride or die, just in a different way now. "I love you always, Riley".
The following month, Riley revealed he was quitting Twitter, writing at the time: 'Keep nearly tweeting stuff I shouldn't so I am saying bye for a while'.
ET has reached out to McGregor's rep for comment.
