Can anyone explain why I can't get more than 50Mbs using Broadband Speedchecker Uk when I have signed up for a guarenteed 100Mbs from BT. My broadband speed checker on BT doesn't work and I am beginning to regret my decision. I have fibre to premises, a BT smart hub modem. I have reset countless times. I tried talking to BT today, was told an Ultrafast team would deal with it, got put through to the team only to be informed electronically that department is closed. Help!!!