New member/ is this "Agaricus bisporus"

[Slarti B]

Hi from Norfolk,
I have never tried to identify any type of fungi before so lets see how much correct information I can supply, the caps are from 1 inch up to about 5 inches

These are found on the edge of our drive, the soil is very dark and (decaying) woody growing within 2 yards are Holly, box and silver birch.

The colour is white but the stem goes dark after picking and the coulor does not change colour after scratching.

The texture of the cap is dry and smooth. It has no particular smell

Thanks
Derek