As scheduled, carrier O2 has started selling the OnePlus 3 smartphone in the UK. You can purchase a unit for as low as zero down followed by 24 monthly payments of £28 each. The plan includes 500MB data, unlimited texts, and 500 minutes.
If you want more data, there are plans that get you 1GB, 3GB, 5GB, and even 20GB data, and carry a price tag of £32, £35, £39, and £44 per month, respectively, with no upfront fee. The device is also available on the carrier's Pay & Go deal, costing £336.
It's worth mentioning that O2 currently only has the Grey color option in stock.
Because your dealing with a UK company, and not on overseas one. You can get one tomorrow and not have to wait (think 5 weeks at the moment)
If you want it on Pay as you Go, why pay £336 when you can buy it sim free from Oneplus for £329?