The IMDb has this to say: “The first print submitted to the BBFC in the UK was granted a '15' certificate on 14 August 2014 uncut with a theatrical running time of 122 minutes and 55 seconds but later cited with remarks stating "Following a request from the distributor, this determination is currently under reconsideration." On 22 January 2015 the film was again granted a '15' certificate from the same distributor, Hammingden Pictures Ltd, with a reduced theatrical running time of 118 minutes and 47 seconds. This work is stated as 'uncut' however, some 4 minutes have been removed from the original print submitted which is also verified by the reduced film length. All details are on the UK BBFC website.”
The BBFC site here only notes that all known versions passed uncut. I can find no details of what has been cut on any site and all Blu-ray releases are around the 119 minute mark so this is the only cut currently available.