If you haven't discovered it, this Peter Kohler article on Carlton and Raleigh is full of good stuff:
https://on-the-drops.blogspot.com/20...cycles-us.html
Here's what he says about the Catalina model:
One of the more successful and memorable 'sixties Carltons was the Catalina, a machine clearly aimed at the "aspirational" youth market and all the more treasured for it, often being a lad's first grown up "racer". Introduced for the 1958 season, its design was up-to-date enough with 72° parallel angles in 19-23" frame sizes and 73/71° for 24", oval section forks, Oscar Egg legs, Benelux or Simplex 5-speed gears, Williams chainset and Dunlop 27" x 1¼" rims. Advertised as a "new look" bicycle, it featured "Anodically" coloured finishes that were, shall we say, of their time. What the Catalina didn't have, at least for the British market, was light weight, most being made of 2030 steel tubing. In 1960, a Catalina Special All Chrome model was introduced and this was the model first exported to the United States the following year. In 1961, the distinctive Capella lugs and fork crowns were introduced. For the British market, the Catalina was finally withdrawn from the range in 1966 but continued to be exported to the U.S. through 1967.