Default Stock 4.1.2 or 4.3 UK firmware

I am trying to do a complete reset on my phone to get ready to go to a service center. However I am unable to find a completely stock UK version of 4.04, 4.1.2 or 4.3. I have tried everywhere but even though it says UK BTU ( my phone was unlocked from day one ) I have so far had Dutch, German, Swiss and even a Chilean rom.

Could some one please point me to one please.
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We all have the right to be stupid, just don't abuse that right

Current phones :

// SGS III White 16GB Omega V58