Sunburst pattern, Astra label
Image © David P.Encill
This pattern can be found with an 'Astra' label, and 'Made in England'. Possibly Duro-Ray?
Known colours: Turquoise, Orange and (rarely) lime-green.
A pattern that is also linked to Jones & Co (UK) and Spiegelunion Flabeg GmbH (W.Germany)