[EDIT - IGNORE THIS POST AS IT'S CONFIRMED THAT THE UK DOESN'T GET THE PRODUCER CUTS THAT ARE ON THE US BLU-RAYS]
There's no reason to think anything from this series would be cut. The bbfc have rated HANNIBAL [Season 1,Disc 1] 18 "This work was passed uncut". Disc 1 contains episodes 1 - 4. http://www.bbfc.co.uk/releases/hannibal-6
The UK Bluray appears to have the TV versions shown in the US (and UK?). 'Unrated' 'producers cut' versions of six episodes are available on the US Bluray along with more extras. Not sure if it locked to region A or not.
I own the US BDs of seasons 1 and 2 , and can confirm that yes season 1 features Producers uncut episodes (unlike the UK set) With season 2 , episodes 1, 2, 3, 4, 8, 10 and 12 are all Producers cuts too.
Oddly , season 2 US set is 3 discs , with a running time of 561 mins. whereas the UK set is 4 discs , running time 571 mins. , but that could be a misprint.
That's because the producer's cuts weren't submitted to the BBFC by the distributors nor ever aired in the UK. The only way to view them is the US blu-ray or DVD set let alone a hell of a lot of extras are missing from this sub-par UK release.