Reporter Ben Brown was speaking to assistant political editor Norman Smith, about launch of the Labour Party election manifesto in Bradford.
When all of the sudden a woman comes onto the screen live on camera and says: 'Absolutely fantastic'
Brown appears to 'look' in that direction and then touch her breast to move her off frame.
The completely stunned woman then slapped Brown on the shoulder before walking off.
The 'grab' happens at 35 seconds.