My Dad owned the 78, which probably disqualifies this comment somewhat. "The Kid's Last Fight" was a favourite for we four children as youngsters. Unfortunately, Dad entrusted the safety of his record collection to hope and luck. Practically the whole lot sat on a shelf jambed unsupported into an alcove, which nevertheless managed to stay there for several years. However the night finally arrived in 1958 when, around midnight, the whole caboodle crashed to the floor wakening all in our house in Acton, West London. Many gems went West in that moment including "The Kid's Last Fight" by Billy Cotton and His Band.
Never heard it since, although I note this version (original) version on YouTube by Guy Mitchell:
This pale blue design with a gold line across the centre seems to have been used mostly for export singles on London as well as Decca.
Why some of them were used for the home market we'll probably never know.