Sobell was born in Boryslav, Galicia, into a Jewish family; he was the only son of Lewis Sobell and his wife, Esther. His family owned factories in the Austro-Hungarian empire and oil interests at Limburg in Germany, but his parents moved to England about 1899 to escape antisemitism. The family settled in Dalston, east London, where Lewis Sobell set up as a confectioner. From 1903 Michael Sobell attended the Central Foundation Boys' School on Cowper Street in Finsbury. At the age of sixteen, with money provided by his father, he set up as an importer of fancy leather accessories. He and his father subsequently worked as leather goods manufacturers.
Sobell made a fortune as a pioneer in electronics through his Radio & Allied Industries Ltd., a manufacturer of radio receivers that grew to become one of Britain's largest and most successful manufacturers of television sets. His daughter Netta married Arnold Weinstock who joined the company in 1954. In 1961, Sobell's company merged with The General Electric Company plc (GEC) making the family GEC's largest shareholder.
Thoroughbred horse racing
An owner and breeder of thoroughbred racehorses, Michael Sobell's first major racing winner was London Cry in the 1958 Cambridgeshire Handicap. He hired Gordon Richards as his racing manager and in 1960, Sobell purchased Ballymacoll Stud, a breeding farm owned by Dorothy Paget in County Meath, Ireland. Among his racing stable's successes, Admetus won the 1974 Washington, D.C. International Stakes at Laurel Park Racecourse in Laurel, Maryland, at the time the most important international race in America. At home, Admetus won the Prince of Wales's Stakes and several races in France including the Grand Prix d'Évry and Prix Maurice de Nieuil. He also owned Lancastrian, winner of the Prix Ganay, Reform whose eleven wins included the Champion Stakes and Sallust, winner of the Sussex Stakes.
In 1979, in partnership with son-in-law Arnold Weinstock, Michael Sobell met with his greatest success with the champion colt Troy whose performances made him 1979's British flat racing Champion Owner. Among Troy's wins were England and Ireland's most prestigious races, the Epsom and Irish Derbys, as well as the Benson & Hedges Gold Cup, and the King George VI and Queen Elizabeth Stakes. In 1983, Sobell's filly Sun Princess won the Epsom Oaks and the St. Leger Stakes. Prince Of Dance dead-heated for the 1988 Dewhurst Stakes.
After Gordon Richards retired, Sobell's horses were principally trained by Dick Hern at West Ilsley stables in Berkshire, which Sobell owned. In 1982 he sold the stables to Queen Elizabeth II and thereafter his English-based horses were trained by Ian Balding at Kingsclere and also by Barry Hills. His racing colours were pale blue with a yellow and white checked cap. these colours were also carried by the horses owned by Arnold Weinstock after Sobell's death.
The nature of Michael Sobell's business led him to become involved in educational and other institutions which advanced science and he served as Chairman of the British Technion Committee. In addition, he used his great wealth to set up the Sobell Fund in 1977 which provided financial support to a variety of benevolent causes including medical, educational, and fitness endeavors. Sobell's foundation supported and raised funds for facilities such as Sobell House Hospice, Michael Sobell Sinai School, the Brain Research Trust and the Michael Sobell Sports Centre at Finsbury Park, Islington. The Michael Sobell Leisure Centre in Aberdare, South Wales also carries his name.
Sir Michael Sobell died in 1993 at age 100. He bequeathed most of his fortune to his charitable foundation.
-  (a photo of Sobell)
- Sobell Department of Motor Neuroscience and Movement Disorders at the Institute of Neurology, London at the Wayback Machine (archived April 4, 2004)
- Ballymacoll Stud at the NTRA
- Timesonline article on the Sobell Fund charitable foundation
- Wright, Howard (1986). The Encyclopedia of Flat Racing. Robert Hale. pp. p277. ISBN 0-7090-2639-0.