Produced: From the 1950s, as a 5 piece or 7 piece set. The 1960 catalogue (above) shows it in Flint (clear) only. I don't know when the coloured versions were introduced.
Pieces:
Tray single pattern line
Tray double pattern line (as per catalogue)
Ring-holder
Large lidded pot with finial
Large lidded pot no finial
Small lidded pot no finial
Candlestick
Known colours: Flint (clear), rosalin (pink), uranium green, blue, clear and black (thanks to Colin Birkinshaw we know that when seen in this colourway the tray, pintray and pot bases are clear, and the candlesticks and pot lids are black).
Credits: Mike Tomlin of the fabulous Victorian Pressed Glass website for the catalogue image. Photos by kind permission of Fred Cooper, Di, Eugénie Peters, Colin Birkinshaw (the black and clear pieces)