I currently know of two different plastic helicopter toys made by Tudor Rose.
According to my initial research, the company began circa 1945, opening a factory in Foundry Road, Cinderford, England. I believe the Tudor Rose brand was actually a trademark of Rosedale Plastics, also referenced as Rosedale Associated Manufacturers.
According to one website, in 1947 a British Industries Fair Advertisement listed the company as "Manufacturers of 'Tudor Rose' Plastic Mouldings, Combs, Buttons, Hair Ornaments, Moulded Costume Jewellery, Nursery requisites, Rattles, Toys, Fancy Goods and Novelties."
In 1950, the company employed 220 people, mostly women.
In 1968 the Cinderford factory, at which toys and domestic articles were assembled, was destroyed by fire and was not rebuilt. By that time some plastic components were made in new works at Steam Mills.
But, I also found additional information on Tudor Rose which indicates that the company started in 1948. The info states:
"Tudor Rose is a British company who were based in Wales. They appear to have specialised in making small dolls, as well as lots of other plastic toys. They sold their dolls at Woolworths, although all their dolls were quite cheap to buy. However very little is known about the company considering how much they made. Tudor rose was a trademark of Rosedale Plastics. The Tudor Rose company was located in Wales from 1948 to 1978. Later the trademark Rosedale Rose was used. Originally Rosedale/ Tudor Rose made novelties such as buttons, combs, plastic jewellery and toys, but by the early 1950s, plastic toys and dolls were their main output. Amongst their toys was a range of hollow hard plastic toys moulded into vehicles, they later went on to make softer, polythene-type playthings, e.g. Noah's Ark. In 1959 Kleeware dolls company sold out to Rosedale plastics.
Space toys by Tudor Rose are particularly sought after by collectors as they are quite rare, along with trains, cars, money-boxes, and walking novelty animals. The most common type of dolls to find made by Tudor Rose are the small moulded-headed straight-legged babies and toddlers. They were made in Caucasian and black and came in two sizes. The majority were sold naked and could be later dressed by the child at home. Many of the small dolls were dressed as fairies and could be used to put on top of the Christmas tree. The trademark of Tudor Rose dolls is solemn faces, closed mouths and distinctive hands with the palms turned down. They often bore the words 'Tudor Rose' across their backs with the rose logo. The most famous doll sold by the company was a walking girl with a moulded plastic dress. She was called Blondy Blueyes and was 7 inches high.
They used brightly coloured plastics for their toys as companies in the 1950s were so pleased that plastics could be easily dyed that they took full advantage and had a variety of colours.
In 1971 the company was taken over and then in 1978 they were bought by Mettoy, who then went on to sell it 5 years later. By this time they had stopped producing toys."
Back to helicopter toys... Both Tudor Rose examples are models of the Sikorsky S-51 Dragonfly. My research shows that a larger friction version was produced in 1954. A second smaller wind-up version was produced, but I don't know the year(s).
Here is the 1954 larger friction toy:
Here is the smaller wind-up toy:
