From the UK’s
Foreign and Commonwealth Office: You should be aware of the
risk of indiscriminate attacks by terrorists in public places,
including tourist sights, throughout the world. Although there is
no recent history of either domestic or international terrorism in
Bulgaria, we believe there is an increased general threat to
visibly British institutions and organisations from global
terrorism as there is in all other countries in this region.

Crime levels are roughly comparable to the UK. Organised criminal
groups are active in casinos, nightclubs, prostitution and
elsewhere. Much local violent crime is the result of turf battles
between criminal groups. You should beware of groups of young
pickpockets (often children) in city centres, especially busy
shopping areas and underpasses. Thieves and pickpockets also target
holidaymakers at Black Sea coastal resorts. You should leave
passports and other valuables in a hotel safe or other secure
place. (You are strongly advised, however, to carry a copy of the
information pages of your passport as proof of identity).

Car theft is commonplace. Thieves target prestige and four-wheel
drive models, but any unattended vehicle is at risk. If possible,
you should use alarms and other visible security measures.