The video shows the moment Jordan North was rescued after jumping into London River Thames save the drowning dog.
The Capital Radio Breakfast DJ, 34, was out jogging when he spotted the Labrador struggling to get back on dry land near Hammersmith Bridge.
A passer-by spotted North and the dog and called the RNLI shortly after 5pm on Monday 16 December.
The former Radio 1 star was found sitting in a nearby lift with a dog.
Speaking to Capital Breakfast, North said: “The real heroes are the RNLI who came out and got me, put a blanket around me. They are heroes.”