Weed or Tree or Treed?

Hello, I have a tall plant/shrub/tree and I was hoping someone could help me identify it so I can decide whether I dig it up or look after it accordingly.

By definition, I suppose it's already a weed, as I didn't plant it, but I was curious as to what it was; its rooted itself dead in the centre of a bed where I was planning on planting a small tree anyway, so if its a 'nice' weed, I'll probably keep it. If its invasive or too fast-growing, I'll probably get rid of it.

Thanks!

First image: tall plant in question immediately next to the dilapidated bird table.
Second image: close up of stem and leaves about half way down.

 

I think it's a Sycamour. Just the job for a Stately Home or the in the grounds of a fine gracious Park, BUT NOT YOUR BORDER Scafell,
Google it!!
Jenny namaste

 

Yep, Sycamore, bit on the big side as Jenny said.

 

I would wait a year, then turn it into a walking stick!

Cheers, Tony.

 

The size of those leaves - watch out Scafell when the seeds form they'll by the size of helicopters!