Originally Posted by
TWCLAM
Bosnia Herzegovina technically requires UK visitors to have a visa ...
Bosnia doesn't require visas for UK passport holders:
https://www.gov.uk/foreign-travel-ad...y-requirements
British nationals don’t need a visa to visit Bosnia and Herzegovina for a total period of no longer than 90 days within a period of 6 months following your first entry.
and neither does Serbia
https://www.gov.uk/foreign-travel-ad...y-requirements
British passport holders don’t need a visa to visit Serbia for up to 90 days.