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Mobile network iD has unveiled the fourth instalment of the brand's "Do your own thing" campaign, which explores the lives of extraordinary individuals.

"Blind fighter" is a three-part documentary about Lee Hoy, a 28-year-old man from South Shields who uses martial arts to overcome the anxiety and low confidence caused by his blindness.

Hoy describes how the sport has helped him rethink his relationship with fear and build his self-confidence and self-belief.

The "Do your own thing" campaign has attracted more than 19 million views since it launched on Facebook in April.

All films can be viewed on the .