The new British ambassador presented his Letter of Credence to Colombia’s President Juan Manuel Santos on Tuesday.
Senior diplomat Peter Tibber was transferred to Colombia after having served as ambassador in Sudan for three years.
Previously, Tibber worked for the British government in France, Turkey, Mexico, Germany and Pakistan.
The diplomat replaced the outgoing Ambassador Lindsay Croisdale-Appleby late last year already.
Tibber arrival comes just before a planned peace deal between the Colombian government and the FARC, one that is supported by the British government.
The new ambassador also comes amid dropping trade between the two countries; Exports to the UK dropped 45% last year and imports from the UK dropped 9.1% between November 2014 and the same month last year.
Tibber is expected to stay on for the coming three years.