All depends on the quality of your wireless connection.
Do test wired if at all possible.
Also run the speedtest at http://speedtest.btwholesale.com/ and after the test choose ‘Further Diagnostics’ and post the speeds and the profiles that this gives. The download profile usually gives a good indication of available download speed, though there are cases where people cannot get near it even with a perfect wired connection.
Many thanks for the input, I have the day off work today and decided to try wired.
Not too sure if you can see the image, pretty impressive considering the cabinet is 0.4 miles away!:)
You do know that the best result you could get via your iphone (it seems that's what your original speedtest stated) is the result you posted.
Hardwired all the way if you want mega fast speeds.