The OP had one thing wrong, and nobody has corrected it: The Halliard were actually Dave Moran, Nick Jones [as he called himself then, early in his career], and Nigel Patterson. They specialised in writing original tunes to previously unrecorded broadsides, at which both Moran & Jones were particularly gifted. Jon Raven did once record with them, on one of his own-label records, but on alternate tracks, not as part of their lineup. Tony Rose was never associated with them: this confusion possibly arose because Nic Jones's & Tony Rose's first solo albums were the first two issues on Bill Leader's Trailer label not masny years later then the days of The Halliard [whose members had all shortly before been schoolfriends].