By Mikemcinally
Buckinghamshire,
United Kingdom 
what is this plant
27 Mar, 2014
Answers
What is the dead leaf at the side of the seedling, that could be a clue!
27 Mar, 2014
I'd guess sycamore - a too familiar sight in our garden.
27 Mar, 2014
Previous question
« Thanks to you all for your suggestions. I think it is possibly likely to have been...
Next question
It is a tree seedling. It is showing the first pair of dicotyledon leaves. It will probably turn out to be an ash or sycamore tree, which you won't want in your lawn.
27 Mar, 2014