Fast-growing thorny vine - help!

I keep chopping it back but it regrows from a huge taproot. Every time I turn around it's grown another three feet. See attached pix. What is it??

thanks!

 

Thanks! No, there are no others nearby, just a few isolated plants - one in the front hedge, and one by the back fence. If it's a blackberry, perhaps it's worth tolerating. It is very thorny though! (Already stuck me once quite deeply even through gardening gloves.)

 

ok - thanks so much for the quick reply!!

 

It`s definitely a wild bramble.:gnthb: As Marley says, get rid of and, if you want blackberries, go for a cultivated thornless one.:gnthb:

 

It's a bramble. The blackbirds eat the fruits, the seeds pass through them and you get the plants everywhere. They seem to grow a mile a minute and any bit that touches the ground just roots and grows.
Get rid of it while it is a minor nuisance or you will have big thickets of the stuff.

 

Thanks everyone for all your help! I'll try and pull it out, but the roots are very deep.

 

I find it is best to pull it out when it is still a young plant.
You might need to dig round it and get it out by the roots.

Two things that seem to grow with great ease are bramble and cherry.
How come that when I plant a cherry stone, it just sits in the pot yet when the birds do the ''scatter planting'' that it takes straight away.