Probably in the wrong section so appologies.
If anyone wnats to order a phone online via three.co.uk, then go through the process as normal, selecting handset tariff etc... Then when on the summary page before going to input your deails, add the £5internet add on to the deal. And where it states promo code use "gadget". It will then give a £5 discount each month for the Internet access
Not sure how long the code will be active