Sorry, I seem to be posting a lot today. Following on from my Acer post earlier, Sycamore trees were mentioned. I have been doing some research and I have popped outside to have a closer look at my large Acer and it seems as if there is a very old and decaying 'wing' which looks like a Sycamore seed. Guessing this is from when I loved at my old address which I moved from at Christmas.
It is very concieveable that these are not Acer's from my large tree but Sycamore trees, and I was wondering why they are considered to be monsters, as suggested in my previous post, as I dont want to be growing monsters.
Thanks again and sorry for all the posts.