Order a sim FREE (Micro or standard) from Sainsburys and you will get a £15 bundle FREE for 30 days

http://www.phoneshopbysainsburys.co.uk/free-bundle

Order a free sim from Sainsburys and get a FREE £15 bundle (800 minutes, unlimited texts & 2GB of data & Double Nectar points! + Top up £10 and get 11p off a litre of fuel + call & data bundle

Also if you then decide to keep the sim top up a tenner and get 11p off a litre of fuel + 300 mins / 500 MB data + unlimited texts and double Nectar points!

Free £15 bundle promotion applies to phones or SIMs purchased online between 25th March 2014 and 14th April 2014.
Offer limited to three SIM purchases per household, and one free £15 bundle per SIM.
Free £15 bundle (800 minutes, unlimited texts & 2GB of data) will be automatically added to your account within 7 days of SIM activation.
Bundle will remain valid for 30 days from SIM activation.
Bundle includes calls and standard texts (fair use policy applies) to UK mobiles and to standard UK landlines starting 01, 02 and 03,
plus voicemail and UK data. For full terms and conditions click here.
Double Nectar points are available for 30 days from bundle activation. Nectar card must be linked to mobile number. Exclusions apply.
For full Nectar terms and conditions go to http://www.phoneshopbysainsburys.co.uk/mbs-nectar-terms
If a bundle has already been purchased, the free £15 bundle will be queued for activation after expiry of your bundle.

You need to activate the SIM before the 30th of June in order to receive the free bundle. E.g. you can activate your SIM right up until the 29th of June and you'll still get the allowances for 30 days. Potentially three months of free mins/texts/data if you order three SIMs!