|Testing your ISP for speed issues (TAP3)|
If you suspect your ISP is to blame for your slow internet speeds you may want to perform an additional TAP3 speed test. This test tests the circuits speed idependant of your ISP and therefore allows you to confirm if the issue is down to your ISPs network.
A TAP3 test can only be used for connections which run over a BT landline (e.g. ADSL or FTTC).