Not exactly a new deal, admittedly, but this is definitely your best bet if you’re on the lookout for unlimited 4G data. Specifically, this Three SIM only deal comes in at £15PM with a minimum 12-month agreement.
The allowance also includes 200 minutes and unlimited texts, and 4GB of your monthly unlimited 4G can be used for tethering.
Standard SIM, micro-SIM and nano-SIM available.
(Thanks to LOH1153 at HUKD)