was looking for a decent sim only deal and stumbled on this offer through Quidco directly for a 12 month SIM.
Three Advanced Plan
8gb Data (Can be used abroad for free - this isn't available with Three 'essential' plans)
Also includes 8GB personal hotspot (again, not available through Three 'Essential' plans)
Cost is £12 per month for the sim.
When you order through Quidco you get £55 cashback. (The link provided is the direct link from quidco to three)
£12 * 12 = £144 - £55 cashback = Total £89 / 12 months = £7.42 roughly per month.
I think this is an absolute steal and will be tough to find a better price for a similar deal!... Someone will probably make me look daft and find something better now :(
Happy bargain hunting!
p.s. not sure if there's something similar on topcashback