Help identifying a weed/unwanted plant that pops up all over and unchecked, grows into a tree!

Question

Per the title really.

• It seems to be quite invasive and pops up all over the place, often entangled into the centre of an existing shrub
• It's a pain to dig out but it can be done
• It's quite (but not completely) resistant to home-use weedkillers
• The bark strips off the stem quite easily when you try to pull it up
• The stem feels somewhat like a eucalyptus - fast growing wood - when cut with secateurs
• It's very fast-growing
• It happily regrows when cut near the base, from just below the cut
• It seems to be quite widespread locally (Berkshire, UK)
• In other people's gardens, there are unchecked examples, and it's well over 10 feet tall - looking a lot like an established tree

I'm wondering:

• what it is
• what, if anything, can I do about it, that I'm not doing already.

Answer 1

It seems a Fraxinus excelior (Ash). It grows fast and it likes stony places (like walls, streets).

Young trees sometime have such reddish look (trunk, branches), especially on dry places.