There is a general threat from terrorism. Attacks have mainly been aimed at official Ukrainian targets, but could be indiscriminate, including in places visited by foreigners. British nationals have not been specifically targeted. Most attacks have taken place in eastern and southern Ukraine, but there have been occasional attacks elsewhere, including in Kyiv where there remains a continued threat. There has been a series of explosions in Kharkiv which has included pubs and cafes. You should remain vigilant and avoid large gatherings and demonstrations.
There is considered to be a heightened threat of terrorist attack globally against UK interests and British nationals, from groups or individuals motivated by the conflict in Iraq and Syria. You should be vigilant at this time.