Some kind of bunting?

Hi All,

I'm hoping you can help me identify this fine feathered fellow as he/she has got me stuck!  I spotted him last week in bushes next to the local canal in Nottinghamshire.  He didn't seem to be part of a flock at all but otherwise I didn't see any particular behaviour.  I was thinking it was some kind of Bunting but the slight yellow colour has confused me.

 

 

Thanks in advance!