Personally I don't think the basic hardware supplied is up to it.
You are almost certainly wrong there. The OpenReach modem is certainly up to the job and could happily run even faster if BT allowed it to. The router likewise seems fine to me (http://www.ispreview.co.uk/index.php/2015/01/isp-plusnet-launch-faster-hub-zero-2704n-broadband-router-full-specs.html ) both only have 100Mb/s ports but that shouldn't be a problem at the moment.
Other than that it could be a dodgy installation or perhaps a genuine line fault but buying new hardware should be bottom of the list. I can't see it getting you anything other than a very minor improvement. The only real reason to change would be to reduce the number of power sockets in use.
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Andrue Cope
Brackley, UK
Edited by Andrue (Mon 05-Oct-15 20:11:55)