What broadband speeds could the UK copper loop manage?

thinkbroadband :: What broadband speeds could the UK copper loop manage?: "In an ideal world replacement of the copper local loop would happen in the next couple of years, but even the recent £1.5bn programme from BT suggests that the copper local loop is to largely remain. Ofcom has published a paper titled 'Assessment of the theoretical limits of copper in the last mile' which gives some idea of what is in theory possible over the existing infrastructure."