Thank you Paul for the advice. My first batch of 150 mounts arrived, precisely as ordered. Took me a day to fit my London Landmark prints , that was about 3 weeks ago now. I'm, now about to order another batch. They sold really really well.
I dont know if it's the red/white combination that goes well with London Bus image, or the street sign colours etc - but they look great and tourists seem to love them. So will be more of the same for me - thanks :)
Denise