Parry-Thomas was born in Wrexham, Wales, the son of the curate of Rhosddu. The family moved to nearby Oswestry when he was five years old, and he was educated at Oswestry School. He went on to study engineering at The City and Guilds College in London.
Parry-Thomas became chief engineer at Leyland Motors, a company whose main products were commercial vehicles. He filed for and received a number of patents, in the fields of electrical and automotive engineering. After the First World War he and his assistant Reid Railton designed the Leyland Eight luxury motor car, which was intended to compete with Rolls-Royce. His experience of driving this car around Brooklands in 1920 persuaded him to give up his career with Leyland to become a full-time motor-racing driver and engineer.
Brooklands
In partnership with another engineer, Major Ken Thomson from New Zealand, he started Thomas Inventions Development Co., based inside the Brooklands circuit itself. After his death, this company became Thomson & Taylor and went on to build such cars as Malcolm Campbell's Blue Bird. From 1923 he lived in the "flying village" there, in a bungalow converted from a First World War hut named The Hermitage. It was an ascetic life, shared only with two Alsatian dogs and his cars, in stark contrast to the hedonism of the Bentley Boys. Parry-Thomas achieved some success on the circuit, winning 38 races in five seasons and setting numerous records.
Land speed record
By 1925 Parry-Thomas realised that commercial success required a higher profile than Brooklands could offer, and switched his attention to the land speed record. He acquired the Higham Special from the estate of the deceased Count Zborowski and rebuilt the car with new bodywork for improved aerodynamics. The car was powered by a huge 27-litre Liberty V-12 aero-engine. Without Campbell's money and prestige, or Henry Segrave's factory connections, Parry-Thomas was unable to obtain a brand-new Napier Lion, as the other record contenders were planning. The car was running in 1925 but did not perform as expected. In April 1926 the car, now named Babs, emerged with another new body. He celebrated by driving the lanes around Brooklands that same evening, despite his lack of headlamps. A few days later, despite the poor conditions and soft, wet sand, Parry-Thomas took the record at Pendine Sands, Wales, the same six-mile beach that Campbell had used in 1924 and 1925. The following day, 28 April 1926, he raised it to over, a record that stood for almost a year.
Death
During the winter of 1926/7 Babs was fitted with yet another new body, partially enclosing the drive and rear wheels by fairings. Parry-Thomas was killed at Pendine Sands on 3 March 1927 while trying to regain his own world land speed record that had been broken just weeks earlier by Malcolm Campbell on the same beach. At the time of the accident it was thought that the right-hand chain had broken and had hit Thomas, causing a fatal head injury as the car was rolling. During the subsequent restoration of the car, it was found that this could not have been the case and that it was more likely that Thomas had been killed as a result of the injuries he sustained while the car rolled and slid along the beach at more than. Parry-Thomas was buried in St Mary's Churchyard in Byfleet, Surrey, close to the Brooklands Circuit. Following the inquest, Babs was buried in the dunes at Pendine Sands. Some 42 years later in 1969 it was controversially recovered, and over the next 15 years was restored by Owen Wyn Owen, at the time a member of Bangor University. For part of every summer, Babs is on display at the Pendine Museum of Speed, Carmarthenshire.
