|Welcome to the US PlayStation Community Forums
They are avaible here in the US I don't know about them being available in the UK. You might want to ask this on the UK PS forum or visit the UK PSN Web store & search for "transformers fall of cybertron"
learn to spell the name of the DLC that you want.
SIEE PS3/PS4 Beta Tester
From SIE blog firmware 4.50 post "There is no guarantee that all USB storage devices are compatible with your system."