Got my Galaxy S from T Mobile UK back in the beginning of August 2010, it was one of the first from them and wasn't branded in anyway but was locked to T Mobile's network.
To start with it was running Eclair 2.1 update1 but now after doing a little registry hack with the Kies software it's running the official Samsung release of Froyo 2.2.
After applying Z4root and One click lack fix I'm now getting Quadrant benchmarks scores over 1900 all the time. This is one hell of a smart phone.As you can see it's now twice as fast as the standard phone.
Full Flash player is now available within the standard browser below is a screen shot of The RemoteHams ORB control running in flash.