By the 1970s machines tools were increasing versatile, faster working, rugged and computer controlled. To meet this demand Bridgeport - through their British subsidiary Adcock and Shipley - introduced a range of new "Interact" and "BPC" models. With over 4,000 units sold to over 30 countries by the late 1970s the Interacts were successful machines and built as the Series 1 and Series 2. The Series 1 was available as both a Mk. 1 and Mk. 2 (produced alongside each other) the latter using the same basic Mk. 1 frame but fitted with a more powerful head. Next in size in the range was the larger and much more powerful Interact Series 2, this also being available as the Interact 4, the most powerful type made and equipped with a strengthened one-piece head and an 8 h.p. motor. All types made extensive use of chrome-plated slideways, had air-cooled, infinitely-variable speed heads and were intended, initially, to bridge the gap between entirely manual machines and computer control, the company selling many to training institutions and also offering in-house course for operators.
Horizontal and vertical machining centres were also manufactured, the early range of the former consisting of the BPC-320H and the almost identical BPC-380H fitted with, respectively, 20 and 80-tool carrousels. Vertical models of the machining centres began with the Type 412, a relatively compact machine (only a little larger than the Company's first computer-controlled miller, the "Series 1 CNC") intended for the production of smaller parts. Somewhat larger and more versatile was the 20-tool carrousel Type 520, this being followed by the BPC-520V, a miller whose Fanuc 150/EIA word address programming system gave full CNC control and the ability to be more fully integrated with computer-controlled manufacturing systems.