I need help identifying two Corvids

Hello, 

These photos were taken in completely different places at completely different times but I’ve always wanted to properly know what these were.To preface, I already get crows in my garden so I compare them to that

 
The first one (it’s the same bird on fence and in car park) was in a car park near some big trees, walked around on the ground a lot and sat on the fence. It was larger than a crow, seemed to me like a rook (it had a white beak base) but I am a unsure

The second one (bird on TV aerial) was absolutely massive, had giant wings that were much bigger than a crow (ends of wings pointed backwards) but made a distinctive crow ‘caw’ sound. This super confused me as I thought it was a Raven but they don’t really sound like that.

Any help would be very appreciated