Bought 'Unlocked' iPhone 4s and it won't recognize s card. help

Apparently you didn't get an iPhone that was officially unlocked, but rather one that either wasn't unlocked at all (and you were flat lied to) or that was hacked to unlock it. Restoring would have removed any such hack in most cases.

Only the carrier to whom the iPhone is locked can authorize an unlock, and most carriers will not unless you have service with them. I'd suggest you go back to the unauthorized reseller from whom you purchased this iPhone for redress, since they didn't sell you what they apparently claimed. It's quite possible, though, that you may have to chalk this up as a learning experience, swallow the loss, and buy another iPhone from an authorized source.

Just so you know, unless your old iPhone was in pieces or jailbroken, Apple would have replaced it for £119 if you had taken it to an Apple Store.

Regards.

Cheers problem is I don't know who the phone is locked to so if I was to sell the phone I'd have to do the same thing the seller did to me and I do not want to do that

You may be able to call Apple support, give them the serial number of the iPhone, and they may be able to tell you to whom the carrier is locked. But they may not, and even if they can, your chances of being able to get it unlocked aren't good unless you're willing to sign up with that carrier for a while until you can qualify for an unlock.  If you can't find out who the carrier is, you'll either have to go back to those scammers who sold you the iPhone, or just sell it as being locked to some unknown carrier and take your lumps in regards to the price you can get.

Obviously, you bought a hacked phone. If it was advertised as unlocked, return it for a refund. They misrepresented what they were selling.