From 1963 to 1965, MRD was not directly involved in Formula One, and often ran works cars in other formulae. A separate company, Jack Brabham's Brabham Racing Organisation, ran the Formula One works entry. Like other customers, BRO bought its cars from MRD, initially at £3,000 per car, although it did not pay for development parts. Tauranac was unhappy with his distance from the Formula One operation and before the 1966 season suggested that he was no longer interested in producing cars for Formula One under this arrangement. Brabham investigated other chassis suppliers for BRO, however the two reached an agreement and from 1966 MRD was much more closely involved in this category. After Jack Brabham sold his shares in MRD to Ron Tauranac at the end of 1969, the works Formula One team was MRD.