Thanks both

I'm not sure it is bracken actually a tangled mess of roots and leaves and thorns with some dead virginia creeper thrown in for good measure. My fence is quite tall and up against a small wall which is up against the remains of the fence of the property at the back. If I was able to make it into the garden I'm not sure I'd be able to make it back again without a stepladder and also I'd be trespassing not to mention the fact that we are in the middle of back to back terraces so the only way in apart from over the fence is via their front door. It's no biggy really it doesn't upset me too much that it's a bit messy I just thought I might be able to benefit from something in their garden. I'll give the Ipomoea a go if it comes to nothing I've not lost anything but a few quid.