Hi, just been on the Whitefriars website; listing 3096 in the 'Is it Whitefriars?', shows what is believed to be a Ravenhead 'Flair' piece. A flatter, stumpy, heavier piece than 'our stuff'.
I have found some 'Cactus' pieces listed on eBay, both UK & Australia, and on a website called 'H is for Home' , ( for those of us who remember the 60's/70's!). The website for Lasisepat, Mantsala, Finland is bereft of any useful information, so the mystery is still unsolved!