Is Benedict Cumberbatch's new girlfriend "Downton Abbey" actress Laura Carmichael? Benedict Cumberbatch and his potential new girlfriend Laura were spotted bonding and having a great time at the Lady Gaga show at Roundhouse in London on Sunday evening.

Cumberbatch and Carmichael were photographed smiling and chatting at a bar before watching the Lady Gaga show.

"Laura and Benedict clearly get along like a house on fire and they were seen laughing away together as they hung around the bar enjoying a few drinks," The Daily Mail writes.

The "Sherlock" actor and "Downton Abbey" actress play up-tight characters on television, but in real life they seemed relaxed and casual.

Benedict, 37, dressed uncharacteristically casual in a newsboy cap, dark brown pants, a black cardigan and sneakers.

Laura was also almost unrecognizable without her early-20th century "Downton Abbey" attire. She opted for a pair of dark jeans, a black and white T-shirt and leather jacket, gray booties, and a bright red bag. Laura Carmichael also let her blonde hair hang free, The Daily Mail reports.

Benedict and Laura seemed to be having a blast all evening, as they laughed, took selfies with other friends, and were all smiles before heading to the Lady Gaga iTunes Festival performance.

Cumberbatch has been single ever since breaking up with his girlfriend of 12 years, Olivia Poulet in 2010, Fashion & Style reports.

Meanwhile, little is known about Laura's love life, according to The Daily Mail.