Help identifying a plant please

I've just taken on an allotment and I am unable to identify a plant that is growing on my plot.

I think it's a creeper, it has a very thick red smooth approx. 1.5 - 2 m long stems with leaves coming off it at intervals. The leaves are very feathery green with a red edge.

Here is a picture of a leaf.

 I hope someone can help...

Thanks

It looks a bit like one of the herbaceous clematis - I think there is one with leaves a bit like that but can't remember it's name - is it possible to see a picture of the whole plant?

Could be one of those thornless blackberries. The red stems would fit with that.

Does look like the thornelss Blackberry which we have.

So don't get rid of it all danni-D, yiu might get some blackberries.

nutcutlet wrote (see)

Could be one of those thornless blackberries. The red stems would fit with that.

Berghill wrote (see)

Does look like the thornelss Blackberry which we have.

Thanks so much, I've just done an image search and am 99.9% certain it's a thornless blackberry... Thats made my morning that has Thank you so much for your help x