Denholm Rees O'Donnell Ltd is a precision engineering company established in 1931 that specializes in motor vehicle engine refurbishment. It started with cars and expanded to commercial vehicles, having a close connection to motor racing at Aintree. In the 1970s the company began to focus more on ship maintenance work due to connections to shipping. In 2000, a new management team focused on building strong relationships, continuous training, and capital investment, helping the company achieve world class status and grow its highly skilled workforce. Today, Denholm Rees O'Donnell Ltd continues to invest in new machinery and training to provide high quality, cell-based batch production and engineering services to its customers.