It seems a bit odd writing a review for a case. But as this is a specific case for the Blackberry Z10, it has the unique function of putting the phone into a battery saving mode whilst not stopping notifications sounding, and letting the famous red light remain visible if you set silent on the phone.
It is well made, ought to protect the phone from the daily rough and tumble, but I haven't dropped the phone so can't vouch for its effectiveness here!
There is also a thoughtful design on the reverse, not visible in Carphone's photos, of a slot for cards and cash - a sort of mini wallet. Good idea for when you are out and about and don't want to carry a full wallet. [Or you could see it as a thief's bonus if he picks your phone and finds cash and cards come for free!]
I think it's a good case and would suggest you consider it over [cheaper] but less functional generic cases.