What make and model of PC are you using?

Which operating system?

custom build,

amd 8-core running @ 3.5 ghz
8 gb ram
forget exact spec of nvidia card
256gb ssd

win 7 svc pack 1 & dual boot with qubes os

There is a big hint in the results from the thinkbroadband test, see how the two download tests differ...the tbb is more congestion and other issues sensitive, whereas the httpx6 saturates the connection over coming issues like this.

So it may be the Vodafone service (or the Openreach cabinet) is very busy in your area. Try the test again in the morning (breakfast times) and if much better you know its not a PC setup issue. Others are seeing some variation between the two tests too

http://tbb.st/147490310423918893602
http://tbb.st/1474894059509118355

But not everyone
http://tbb.st/1474906896467843755

A good test should look more like
http://tbb.st/1474078579357297355
http://tbb.st/1474866362406766155

Is that the AMD FX8320 Black Edition 8 Core?

Which motherboard?

Which ethernet card?

Looks a lot like congestion, I second testing at non-peak hours.

as of 07:40
http://www.thinkbroadband.com/speedtest/results.html...

Have you got another device like a PC or a phone to try it on? The speed test will run on a phone

not sure on board, got a deal from ebuyer.com and its the inbuilt nic

http://www.thinkbroadband.com/speedtest/results.html...

From iPad

Its better but has a hint to it, that once things get busier the tbb result is going to drop.

The early one shows that there is nothing per se wrong with the PC or connection.