It was founded by Geoff Davies, an enthusiastic promoter of small, unsigned bands, who described the label as "Music to drive you to drink".
[1] The label was started in May 1981, its first release being the self-titled debut EP by local electronic band Ex Post Facto.
Due to a change in building ownership both the shop and label were forced to move and Davies set up office in his house.
[1] The band's debut album sold over 50,000 copies, enabling Davies to plough money back into the label.
[1] Probe Plus were later home to a number of Welsh bands, including Fflaps who released a Welsh-language album on the label.