BRAND NEW IPHONE 5. 16GB. WHITE. I AM BEING HONEST IT IS ON T-MOBILE, ORANGE. ?

BRAND NEW IPHONE 5. 16GB. WHITE. T-MOBILE, ORANGE. I bought this phone from gumtree. The guy which sold me told that it is unlocked. I will be honest Later I find out it was locked. I asked from Apple store and said to me it was locked to T-MOBILE, ORANGE. But I am on different network If someone want to use this phone in Uk. they can put pays as go sim card from Orange, Or after useing 30 days they can Unlock fro Orange.