It's elementary, my dear Watson: Benedict Cumberbatch and Martin Freeman grab a coffee as HUNDREDS of fans line the streets to see them film Sherlock



It's become one of the nation's most popular television shows since it first hit screens back in 2010.



And Benedict Cumberbatch and Martin Freeman received a welcome of superstar proportions as they got to work shooting the upcoming third series of Sherlock on London's Baker Street on Tuesday.



Greeted by hundreds of fans who were evidently desperate to catch a glimpse of their idols, the co-stars didn't seem to be at all fazed by the plethora of viewers keen to enjoy a slice of the action.



Back on set: Benedict Cumberbatch and Martin Freeman got to work shooting the third series of Sherlock on London's Baker Street on Tuesday

Rock star greeting: The co-stars received a welcome of superstar proportions as hundreds of fans lined the streets

Taking the somewhat chaotic situation totally in their stride, the pair breezed through the streets as they prepared to get to work on the action-packed show.

Chatting away as they wandered along companionably, Martin was evidently in need of a caffeine boost as he sipped away on a coffee.



The duo seemed to be shooting scenes involving a black cab, and in spite of the fact that their every move was being documented by hundreds of camera-wielding fans, they didn't seem to be too bothered by the huge amount of attention they were receiving.



Here come the boys: The co-stars didn't seem to be at all fazed by the plethora of viewers keen to enjoy a slice of the action

Slice of the action: The pair's every move was being documented by hundreds of camera-wielding fans

True professionals: The pair took the somewhat chaotic situation totally in their stride, and breezed through the streets as they prepared to get to work on the action-packed show

Stopping for a brief break from filming later in the day, the pair seemed to be in great spirits as they sat on a bench together.



Chatting and joking away, the two actors sipped on coffee and munched paninis as they re-fuelled ahead of a long afternoon of filming.



But mid-way through their break, Freeman and Cumberbatch - who play Watson and Sherlock respectively - were treated to a glimpse of British tradition in all its glory, as the Queen's Guards marched past.



Drama: The duo seemed to be shooting scenes involving a black cab, with Watson appearing to be involved in some kind of confrontation

A welcome coincidence: Freeman and Cumberbatch were treated to a glimpse of British tradition in all its glory, as the Queen's Guards marched past as they took a break from filming

Fascinated: Benedict seemed to be particularly taken with the scene, filming away on his iPhone as a memory of the day

And Benedict seemed to be particularly taken with the scene, filming away on his iPhone as a memory of the day.



In March, the pair were spotted filming for the latest series of Sherlock in Cardiff City Centre, before travelling back to London to continue the shoot.



And Benedict has promised fans that season three could be the best yet.



What on earth? The actor seemed to be a little perplexed as the guards made their way through the streets

A break from the norm: The star seemed to be a little tickled at the scene he saw before his eyes

A bite to eat: Benedict was later seen munching on a panini as he refuelled for the afternoon

Speaking in an interview with Radio Times, he said: 'It’s a cracking first episode. I can’t wait for people to see it. Really exciting. There’s a lot to answer.



'Sherlock is alive – that’s not an apparition. It’d be very odd if we saw inside Watson’s head and it was a picture of himself walking away from Sherlock’s grave in order to cut back to an image of Sherlock.'

Since hitting screens back in 2010, Sherlock has won over millions of viewers and become a critical hit, picking up a BAFTA for Best Drama among its numerous awards.



Time for a break: Stopping for a brief break from filming later in the day, the pair seemed to be in great spirits as they sat on a bench together sipping coffees

Sharing a joke: The pair seemed to be in great spirits as they chatted away together

Talented: Cumberbatch and Freeman play Sherlock and his assistant Watson respectively in the BBC detective drama



