Please help identify.

Please can you help in identifying this bird?

The photos were taken in a hurry before the bird could fly away. I have tried to improve the photos, with what I hope is a better image on the right hand side.  

I saw this second bird, that flew off as I grabbed my camera.  

Please can you confirm that this is a juvenile robin rather than a juvenile black redstart, as we have been lucky enough in the past to see both in the hedges that border our garden.

Would a juvenile black redstart always have a red/orange edge to it's tail feathers?  My bird book seems to suggest that the juvenile redstart would have a spottier belly. Thank you.