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Sherlock stars Benedict Cumberbatch and Martin Freeman have been spotted filming the latest series of the hit TV show in Cardiff City Centre.

Cumberbatch, who plays Sherlock Holmes, was seen at Cardiff University's Glamorgan Building on King Edward VII Avenue, wearing his trademark long, black coat and blue scarf.

Co-star Martin Freeman, who plays Doctor John Watson, was also spied on the set, wearing a red-checked shirt and dark glasses.

Filming of the third series started in March and the stars have since been spotted around the city.

Sherlock has won millions of viewers and been a critical hit, picking up awards including a Bafta for Best Drama.

It was named the top television show of 2012 in a Radio Times poll and an episode featuring Lara Pulver as dominatrix Irene Adler was the most popular show on the iPlayer at one stage – having been watched around 2.5 million times.