Please accept my apologies for the issue with your broadband speed.
After testing the line, it appears stable and the speed is above the estimates. I have performed an SNR reset on the line as the SNR margin appears low compared to the length of the line.
If the problem persists, please run a speed test on http://www.speedtest.btwholesale.com via an Ethernet cable and Internet Explorer / Microsoft Edge. If the speed is lower than the estimated speed, please click further diagnostics then enter your telephone number and run the diagnostics to send this information to us. Along side this, please raise a fault here and let us know when you have completed it.
If this post resolved your issue please click the 'This fixed my problem' button