A revised HF Band Plan comes into force today, 1 June 2016, for all countries within IARU Region 1. This includes the United Kingdom.
A copy, in pdf format, can be downloaded from here.
Although the Band Plan is voluntary in Region 1, member societies including the RSGB are strongly recommending that it should be observed. The main changes are concerned with increased allocations for narrow-band digital modes (e.g. JT65 and JT9). In particular, 3570 - 3580 kHz in the 80m band is now allocated to these modes.