I second Uk Printed Mugs, we use the same press from BMS. You can find it on ebay but I am told there are quite a few knock offs of this model about. I noticed identical looking presses on Aliexpress but in different colours. Its worth getting from someone like BMS for peace of mind.

(Mind you saying that I bought mine second hand but they had purchased it from BMS 8 months earlier and I saw the receipt)

Alex.