Shrub? Popping up

This year I've noticed this shrub? popping up everywhere, including our lawn. We live in the country with plenty of trees about, but can't seem to work out what this is. Any ideas? TIA

 

Hi

the tree above it it could be the root stock it was grafted onto suckering , have you by mistake hit the roots with the lawn mower or dug around the tree.... and damage to roots can cause this .... see what the others think


Spruce

 

It favours a blackthorn , bloody nuisance its send long suckers up and its berries can get around as well

 

Not sure why But I;m thinking willow or possibly poplar.

 

The tree it's coming up near is a Copper Beech. I think there is Blackthorn about, so it could be that. Don't think I've seen any Willows about, but I think a neighbour down the road has some Poplars. It's also coming up in our lawn about 10m or so away. Tempted to dig one up and let it grow, to see.

 

or to see if its coming from a bigger root ?