'Sherlock' co-stars Benedict Cumberbatch and Martin Freeman are 'hardly close'

Actors Benedict Cumberbatch and Martin Freeman are hardly close and never socialise outside the sets of their hit show 'Sherlock', says a source

Martin Freeman and Benedict Cumberbatch

London: Actors Benedict Cumberbatch and Martin Freeman are hardly close and never socialise outside the sets of their hit show 'Sherlock', says a source.

According to The Sun, the two, who embody Sherlock and his sidekick Dr John Watson, are also not especially keen to come back for a fifth season.

"Benedict and Martin aren't mates and they don't spend time together away from the show. They're professional and very polite to each other but there's not the warmth you'd expect after filming together for six years," said the source.

The source added: "There isn't a huge desire to come back for another season."

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