British horse racing is big business. Whether online, over the telephone, or in high-street betting shops, millions of pounds trade hands on every race taking place in Britain every day.

Yet away from the big weekend meetings, Royal Ascot, Cheltenham et al, attendance at everyday small horse racing meetings is relatively small. Visit the racecourse betting ring on a dull Monday, and you will find a well-informed motley collection of racing enthusiasts, passionate about the sport — even more passionate about having a bet. Each race is a small battle, in the ongoing war between punter and bookmaker.

These pictures tell their story.

Martin Amis is a "semi-pro" street photographer based in the UK. These images are part of his ongoing project on the British Racing community.