The sail maker may have decided to be an independent dealer of UK-Halsey products. Seems to be the thing to do with sailmakers these days. Most lofts are for repairs, and measuring, then the sails are made in one BIG loft elsewhere in the world. IE my UK TDS main was made in Taiwan IIRC from the shipping label. I think sending them a email with the logo could still be worth a shot. Or to some one from any of the larger lofts. Then again, someone posted a logo site to a question I had a week or so ago, and it shows what appeared to be a different logo for Jeanneau's, then in the mean time, am realizing that the current compass rose logo may have been instigated by Group Beneateau when they bought Jeanneau, and the logo I was seeing, and is on my 85 Arcadia brochures, may actually be the original by Henri Jeanneau!
She drives me boat,
I drives me dinghy!