Nice first phone for a youngster. For 20 pounds more you get the 'unlocked' version - but the one for 69 pounds was unlocked for me. Unlocking these is cheap anyhow - couple of pounds on eBay.
Came with Android 4.4.4 - and it will be upgradable to Lollipop (5.x) - though i'm not sure I want to.
Will be my 10 year old sons first phone.
One drawback is it doesn't have alot of memory (but you can insert an micro-sd card), and it doesn't have a front facing camera. Quite fine for a 10 year old.
I was very impressed by the screen - very bright, and the unit itself very responsive.
Quite a bargain for the quality of phone.