I can't think of any domestic airport that has a locally run duty free shop (maybe IOM but I am not 100% sure). World Duty Free is by far the leading operator in the UK (of the decent sized airports here, only LCY, BFS and LTN do not have a World Duty Free presence).
I thought World Duty Free was owned by DuFry which is a listed company in Switzerland but happy to be corrected.
Last edited by tigertanaka; 12th May 2021 at 08:04.
Reason: typo