Having done a quick check on the website I couldn't find this posted. I have recently bought a copy of Diablo UEE from Tesco at Coventry's Ricoh store also having just been to the Bedworth branch I have seen it for the same price so I assume this is national as it does have a yellow label. I know it isn't as good as the Black Friday deal on Tesco Direct (Where are them DeLoreans!) but seems to be the best price around.
Other prices at the time of checking:
Rakuten: £45.00 (Cheaper if code still works)
Hope this helps someone and Merry Christmas!