These images are of Rubus laciniatus, a species of bramble that even boasts an 'English' name - that of Cut-leaved Bramble. There are currently 334 microspecies of rubus recognised in the UK and I can only recognise one of them, the one pictured here. I might be able to identify more, but, to be honest, I haven't really tried. I imagine that to do so might involve keys, microscopes and a dictionary to decipher such words as 'acicles' and 'tomentose'.
This plant was found on Headley Heath in Surrey. It is, in fact, an alien species to the UK and well-known for its good fruit.