Tarmac Group 1964, now group managing director, Martin acquired key quarrying assets, including Cliffe Hill Granite, Rowley Regis Granite and Hillhead Hughes. In 1968, Martin engineered the three way merger between Tarmac, Derbyshire Stone and the Scottish Asphalt company, William Briggs, creating the country's "largest roadstone and construction group". The group was briefly known as Tarmac Derby but the Derby name was later dropped. Further acquisitions were to come. Permanite, Britain's biggest roofing felt manufacturer, and Limmer, a quoted asphalt company, were bought in 1971, while the 1973 purchase of Mitchell Construction (which had foundered on the Kariba Dam) strengthened the construction
The Bobby Fuller Four name; recordings were either credited to simply Bobby Fuller, or Bobby Fuller and the Fanatics. Various other members (now including a second guitarist in addition to Fuller) played in the band at this time; however, the most significant were Jim Reese (formerly of the Embers) on guitar, and Dalton Powell (who had previously played piano for the Embers) on drums, while Bobby Fuller and Randy Fuller stayed constant on guitar and bass, respectively. By 1963, the band pursued a record deal with a major label in Hollywood, California. While they were neglected by most labels, Bob Keane of Del-Fi Records