The EE shop in Canary Wharf is advertising a rolling monthly sim with 8gb data for £16 per month. No idea if it's just that store or others too
EE pries per GB are stupid, the 3 plan although slower is much better because in 2 months there will be free 4G upgrade. Although his 8gb deal is better but not much.
On EE webiste its £16 for 3Gigs which is lol