Following the Gaming Act 1845, the only gambling allowed in England was at race tracks. The introduction of special excursion trains meant that all classes of society could attend the new racecourses opening across the country. Cash was concentrated in the hands of bookmakers, who employed bodyguards against protection gangs operating within the vast crowds. William "Billy" Kimber, born 1882 in Summer Lane, Aston in Birmingham was head of the Birmingham Boys. With gangs in Uttoxeter and Leeds he controlled racecourses in the Midlands and the North. For several years Kimber was probably the biggest organised crime boss in the UK. He set up a secondary base in Islington, North London to concentrate on the racetracks in the South of England, teaming up with London gang bossCharles 'Wag' McDonald. Kimber died in 1942 at Mount StuartNursing Home in Torquay, after a long illness. Kimber formed alliances with smaller organisations such as the Hoxton Gang and the Elephant and Castle Mob. Now at racecourses in the South East, one group the Brummies began to prey on were the Jewish bookies from London's East End, who turned to local underworld boss Edward Emmanuel, who in turn recruited the Italian Sabini Gang as protection. In March 1921, the Brummagems ambushed Sabini at Greenford Park Trotting Track. A few days later, Kimber was found shot and beaten in Kings Cross, London, having gone to visit Sabini. The violence escalated, but Sabini gained the upper hand when 23 Birmingham boys were locked up following the "Epsom Road Battle".
Kimber's gang believed that a group of Leeds bookmakers travelling in a Crossley tender at Ewell, near Epsom, on Coronation Cup day were in fact the Sabini Gang. The tender was rammed by a taxi, and 60 men set upon the occupants with hatchets, hammers, and bricks. The attack was led by a man with a revolver, and initial reports suggested it was a Sinn Féin riot. The gang had used taxis and a blue motor coach to both follow their victims and escape. The police located the coach at the George and Dragon pub on Kingston Hill and were able to muster 50 officers.
