Three trees to ID please

I've tried to focus on the leaves more than the overall tree shape.

The third tree (file: Tree3) is a strange one - up until recently most of it was swamped with brambles but I notice a lot of small 'calluses' on the twigs and the leaves seem to mainly exist in clusters close to the twig and branches.

It's probably best to save the images so that you can zoom in.

Thanks

 

No 1 looks like walnut, not sure about no2, No3 possibly some kind of Prunus species.

 

Thanks a lot, anyone got any ideas about Tree2 please?

 

I think we need a better picture, close up of leaf etc.
Its almost just a silhouette.

 

Yeah, I'm not the best photographer. :-)

Will try and get a better shot.

 

Pictures of the bark would help too.