A trip to Avonmouth by a delegation from Scottish Borders Council cost nearly £4,000.
The visit to the Bristol port in October last year was organised to allow elected members and officials to tour and inspect a state-of-the-art waste treatment facility.
It is operated by a company which has signed an agreement with the council to provide a similar plant at Easter Langlee in Galashiels by 2019.
The bulk of the 19-strong group travelled from the Borders by coach, with two officers taking the train and one flying. The party spent one night at a hotel before touring the facility the next morning and returning home later that day.
A Freedom of Information response reveals that the average cost of dinner, bed and breakfast at the hotel was £126, and that the travel cost of those who went on the bus was £1,350.
The airborne officer’s fare was £77.50 and it cost £228 for the pair who took the train.
The response says no expenses have been claimed for the trip, the total cost of which came to £3,939.