ID fungi please

Tall trees

Hi, can someone ID this fungi it's growing in my lawn under a very old Copper Beech Tree, it's growing in a circle.
thanks 
Gareth 

steephill

A photo would help.

Tall trees

I tried but it wouldn't up load yesterday I'll try again. 

steephill

At a guess it might be this https://en.m.wikipedia.org/wiki/Marasmius_oreades - fairy ring champignons. But you need an expert to examine physical samples to confirm ID.