This is true. The GA-MA78GPM-DS2H, which is the Ultra Durable 2 model is availble now in the UK. The GA-MA78GPM-UD2H, the Ultra Durble 3 version, will NOT be sold in Europe.
The GA-MA78GM-UD2H is also availabe but without the Side Port.
I'm sure you won't need to return your board, but should you need to, you can return to Gigabyte UK. Gigabyte are the only motherboard manufacturer with a UK based RMA centre, so it will be repaired in the UK. A replacement however, would be more difficult.