After joining the fledgling AJS motorcycle company in 1914, Williams was soon appointed as head tester, tuner, and factory driver as a result of his motoring proficiency.
He achieved early successes in his career, winning the Isle of Man TT at his first attempt in 1914 in the Junior category aged 20 setting a then record lap time of 47:18 (47.5 mph).
Due to his intermittent rheumatic condition resulting from his wartime actions Williams did not pass the medical to drive the senior race that year.
[7] His skills as mechanical apprentice at the Commercial Autocar Company (1908-1911)[8] were spotted and he was asked to become one of the first employees of the then nascent A J Stevens & Co., Wolverhampton[9] where he became head of testing and competition driving.
After the outbreak of war in 1914 Williams joined the Royal Engineers and was sent to France as part of the Expeditionary Force serving as a despatch rider, where he was awarded the Distinguished Conduct Medal (DCM) for acts of bravery at Neuve Chapelle in 1915.
Focusing on business he traded Raleigh, Royal Enfield and Sunbeam makes and expanded Eric Williams Ltd into a second location in Pierpoint Street Worcester for car vehicles.
He enjoyed creative writing and journaled his life delivering new cars from the production line to different places across Europe and Africa and the people he met.