Here's a deal! Right now you can get unlimited voice minutes, unlimited text messages and 4GB of 4G data for £9 a month, with a 12 month contract on Three's 'Essential' Plan. You can also pocket a £25 Amazon voucher when you sign up, which makes it effectively £6.92 a month. That's crazy cheap!
Available by using this link to the Three website, it should be noted that the deal doesn't include feel at home use abroad, nor tethering. But as mentioned above, it does include 4G access. Frankly, for the price, it's unbelievable.
This deal won't last for long, so sign up while you can!