Identification required

Can someone please identify this creeping perennial in my cousin's lawn. It resembles Birds Foot Trefoil but is much smaller, I thought it might be Lesser Birds Foot Trefoil but I'm not sure.

 

Black Medick?

 

This web site may be helpful.

Trefoils & Medicks

 

Maybe kidney vetch.

 

The original pics are no where near clear enough for me to try to id them.
Which is why I posted the link above.
I find Trefoils and medicks rather hard to id.
However I can just about make out a clover type leaf.


Anthyllis vulneraria ...common name Kidney vetch can be ruled out as it does not have this.

 

Thanks for everyone's help, and for the link @Silver surfer, I have given it to my cousin.

 

I hope it helps your cousin.
I have never found links for "Flora of east Anglia identification guide" before.
I was well impressed with the clear pics and id pointers.
I think maybe I should use it to double check my own pics!

 

I hadn't noticed the title, I went straight to the descriptions ! but never mind, I suppose a plant can be identified wherever it's growing.