In reply to a post by BatBoy:

As there's some doubt to the quality of the wifi card in the Lenovo, you could always try a USB wifi adapter instead like this one www.amazon.co.uk/300MBPS-Wireless-Adapter-802-11-Network/dp/B00VHPZBF6

Unbranded adapters can be of questionable quality too. I'd probably spend a few quid more and get something branded, like: http://www.amazon.co.uk/TP-LINK-TL-WN823N-300Mbps-Wi...

Fair point and if it doesn't help then you can return it for a refund. It's a Realtek chipset rather than Intel which is really good news. Course it does beg the question as to why you should have to spend your money resolving a design problem from a major manufacturer, but then it is only £4.36. If would however, if proved to be successful. be ammunition against Lenovo as to the cause of your wireless problems.

In reply to a post by rogerfp:

Fair point and if it doesn't help then you can return it for a refund. It's a Realtek chipset rather than Intel which is really good news. Course it does beg the question as to why you should have to spend your money resolving a design problem from a major manufacturer, but then it is only £4.36. If would however, if proved to be successful. be ammunition against Lenovo as to the cause of your wireless problems.

I am overwhelmed by the quantity and quality of help you guys have shown. It's fantastic thank you all so much

Yes I'll buy the TP-LINK TL-WN823N 300Mbps now and see if it makes any difference. If it does, John Lewis can have the laptop back as you say its ammunition against Lenovo.