Phones4U offers 32GB microSD card, flip case with S III preorders

The deal goes for both the Blue and the White Galaxy S III units and the free memory card, will give you total storage of 48GB. Phones4U offers the S III with contracts on Vodafone, Orange and O2, there doesn't seem to be a SIM-free version.

Phones4U still lists the delivery date as May 30, though they still have a chance to change their mind and move the launch to the 29th.

For more deals, you might want to check the Carphone Warehouse (they also have deals for Three). If you pre-order from them, you'll score a 16GB microSD card, an in-car charger and a screen protector (at first they offered a free Galaxy Tab 10.1, but that deal ended pretty swiftly).
Thanks to Craig for the tip!
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